Equation Stoichiometry

Key Questions

• How can I find the limiting reactant?

  You will need to determine the balanced equation for the chemical reaction and calculate the number of moles for the reactants.

  Here is a video which discusses how to determine limiting reactants.

  video from: Noel Pauller

  mrpauller.weebly.com · 1 · May 22 2014

• What are the types of stoichiometry examples, with examples?
• Question #e2e82
• What mass of carbon dioxide can 1.00 kg of lithium oxide absorb?
• What is an example of a stoichiometry practice problem?
• What is an example of a balanced equation practice problem?
• How can I balance a chemical equation?
• How can stoichiometry be used?
• How do stoichiometric ratios relate reactants to products?
• How does gas stoichiometry differ from stoichiometry of solids and liquids?
• How does stoichiometry relate to the law of conservation?
• How can I balance equations in chemistry?
• How can I find the limiting reactant?
• What is the balanced equation for photosynthesis?
• What is the balanced equation of Zn+Pb(NO3)2---Pb+Zn(NO3)2?
• What's the balanced equation for magnesium and hydrochloric acid?
• Why do you have to use moles when solving stoichiometry problems instead of just converting from grams to grams?
• How do you find the conversion factor in stoichiometry?
• In the following reaction, 2NaN₃ decomposes to form 2Na plus 3N2. If 500 g of NaN3 decomposes to form 323.20 g of N2, how much Na is produced?
• Question #86746
• Question #ee3a8
• Question #659e3
• Question #7d7f9
• Question #9937f
• Question #a15ac
• Question #6dead
• Question #35151
• Question #6cb30
• Question #5ae19
• Question #53027
• Question #9f667
• Question #967d1
• 2C6H14+19O2---->12CO2+14H2O What mass of oxygen (O2) is required to react completely with 11.7g of C6H14?
• Question #6bcdf
• Question #4aed1
• Question #aca1d
• Question #1b172
• What volume of oxygen can be obtained by the addition of excess water to 1.0g of sodium peroxide?
• Question #61803
• Question #0cbef
• How many grams of cobalt(II) chloride are needed to react completely with 68.9 mL of .366 M KOH solution, if the equation for the reaction is #Co^(2+) (aq) + 2OH^(-)(aq) -> Co(OH)_2(s)#?
• Question #36e9a
• Question #4323e
• Question #b63a9
• Question #b7deb
• What mass of carbon dioxide is produced by the reduction of #Fe_2O_3# by carbon monoxide?
• How many moles of carbon dioxide are recovered after reduction of a #1000*g# mass of #Fe_2O_3# by #CO#?
• Question #ef04f
• Question #c35b1
• How react is #SiO_2#?
• A 2.000 g sample of an unknown metal, #M#, was completely burned in excess #O_2# to yield .02224 mol of the medal oxide, #M_2O_3#. What is the metal?
• In the formula #H_2O_2 -> H_2O + O_2#, how many grams of #O_2# are produced from the decomposition of 68 g of #H_2O_2#?
• Question #a0bc7
• How many moles of #O_2# are produced from #4.01 * 10^23# molecules #Fe_2O_3#?
• Ferric oxide may be reduced to pure iron either with carbon monoxide or with coke (pure carbon). Suppose that 150.0 lb of ferric oxide are available. How many pounds of carbon monoxide would be required to reduce the oxide?
• Question #7a784
• In the reaction #2KClO_3(s) -> 2KCl(s) + 3O_2(g)#, how many liters of oxygen would be produced from 231 g of potassium chlorate?
• In the equation #N_2(g) + 3H_2(g) -> 2NH_3(g)#, 8.5 grams of hydrogen and 15.8 grams of nitrogen react to form ammonia. How many grams of ammonia are produced?
• For the reaction represented by the equation #N_2 + 3H_2 -> 2NH_3#, how many moles of nitrogen are required to produce 18 mol of ammonia?
• How do we represent the thermal decomposition of potassium chlorate to give potassium hypochlorite and dioxygen gas?
• Question #578d1
• Question #c7ba8
• Question #f8baa
• Question #c67b3
• What mass in grams of sodium hydroxide is produced if 20.0 g of sodium metal reacts with excess water according to the chemical equation #2Na(s) 2H_2O(l)->2NaOH(aq)+H_2(g)#?
• 10 g of Cu, 10 g of O2 react. Which is the limiting reactant? What amount of reactant remains in excess? Calculate the number of particles of reactant in excess. What is the mass of the produced product?
• How do you balance #Al(s) + 3Zn(NO_3)_2(aq) -> Al(NO_3)_3(aq) + Zn(s)#?
• What occurs when an aqueous solution of #"lead(II) nitrate"# is mixed with a solution of #"sodium carbonate"#?
• Calcium hydride reacts with water to form calcium hydroxide and hydrogen gas. The balanced equation to this is #CaH_2+2H_2O#----#Ca(OH)_2+2H_2# How many grams of calcium hydride are needed to form 8.400 g of hydrogen?
• Question #7be8c
• How does mass balance apply in a chemical equation?
• How do you balance #C_2H_5OH(l) + O_2(g) -> CO_2(g) + H_2O(g)# and determine the mass of #CO_2# produced from the combustion of 100.0 g ethanol?
• Question #a39a6
• In photosynthesis glucose c6h12o6 and o2 are produced from co2 and h2o. 6CO(g)+6H2O(l)+680kcal=C6H12O6(aq)+6O2(g) How many grams of glucose are produced from 21.0g of CO2?
• How many grams of #CO_2# are produced when 88 g of #O_2# are reacted with an excess of ethane?
• How many grams of #CO_2# are produced from 125 g of #O_2# and excess #CH_4# in the equation #CH_4 +2O_2-> CO_2 + 2H_2O#?
• Have we ever used #""^56 "Co"# for any interesting industrial purpose(s)? Cite any sources you may find on this.
• Calculate the volume of chlorine that is required to convert 1 kg of iron in ferric 3 chloride at standard conditions?
• Calculate the volume of chlorine at 120 kPa and 20 °C that is required to convert 7 kg iron to ferric chloride?
• Question #c3f25
• Using the equation, #"4Fe + 3O"_2##rarr##"2Fe"_2"O"_3#, if 96.0 g of oxygen reacts, what mass of iron was oxidized?
• Question #dd10b
• What is the volume of nitrogen that 50.0 g of ammonium nitrate produces when it decomposes? What is the mass of water formed?
• Question #814cd
• Question #0be8b
• Question #5db3b
• Question #5a7e3
• Question #5f0a2
• How many moles of solid aluminum are needed to react with nitric acid in order to produce 5.0 moles of hydrogen gas?
• Calcium oxide and carbon dioxide are produced from the decomposition of calcium carbonate. How many moles of calcium carbonate are needed to produce 15.0 grams of the calcium oxide?
• What volume of 0.250 M HNO3(aq) is required to completely react with 10.0 g of zinc metal according to the equation: 2 HNO3(aq) + Zn(s) → Zn(NO3)2(aq) + H2(g) ?
• How much potassium bromide, #"KBr"#, is produced if 20.0g of potassium bromate, #"KBrO"_3#, decomposes?
• How many moles of #Cl^-# ions are needed to completely combine with 0.25 moles of #Mg^(2+)# ions?
• #Sn(s)+ 2 HF (g) -> SnF_2(s) + H_2(g)# How many grams of hydrogen gas will be produced if 2.5 mole of tin react?
• 84.27 grams of hexane combusts with excess oxygen to form carbon dioxide and water. What mass of water in grams will be produced?
• In a #10*g# mass of an iron oxide there are #4*g# of iron. How many grams of oxygen are there?
• How much iron metal can be prepared from an #100*kg# mass of #"ferric oxide"#, and excess carbon monoxide?
• Question #ee354
• An #0.025*mol# quantity of hydrogen gas was collected from the reaction of sodium metal with water. What molar quantity of sodium was used?
• Given #Fe_2O_3(s) + 3CO(g) rarr 2Fe(s) + 3CO_2(g)#, how do we calculate the molar equivalence?
• Question #5cafa
• Question #7037e
• Question #1eec5
• Question #d97b5
• Question #878d6
• What mass of #MnCl_2# could be isolated by reduction of #MnO_2# with #150.0*g# of #HCl(g)#?
• Question #1bbbc
• Question #ca49c
• Question #d02c8
• Question #c8827
• Question #0a43f
• How are chemical reactions represented?
• Question #f3fca
• Question #3fdb7
• Question #922f5
• Question #c373d
• Question #620d2
• How many moles of #H_2SO_4# are required to completely neutralize 0.10 moles of #Ca(OH)_2#?
• Question #ee1e7
• Question #1c236
• A #1.961*g# mass of #"salicylic acid"#, #C_6H_4(CO_2H)(OH)# is treated with excess acetic acid. How much #"ASA, i.e. aspirin"#, i.e. #"1,2-C"_6"H"_4"CO"_2"H(O"_2"CCH"_3")"# could be prepared?
• Question #34e28
• What mass of copper(II) chloride is required to prepare sodium chloride from a #3.65*g# mass of sodium metal?
• For the reaction represented by the equation #Cl_2 + 2KBr -> 2KCl + Br_2#, how many grams of potassium chloride can be produced from 300. g each of chlorine and potassium bromide?
• How many moles of methane do I need to react with 1 mol of oxygen in a complete combustion reaction?
• What is the mass of oxygen in a #233.0*g# mass of carbon dioxide?
• What volume of nitrogen gas can be produced by the decomposition of 50.0 g of ammonium nitrite if the yield for this reaction is 45.0%? Water is the other product.
• Question #71444
• Why is this statement false: "If 10 grams of propane burn, you need 50 grams of oxygen."?
• Question #fb120
• Propane and oxygen react according to the equation #C_3H_8(g) + 5O_2(g) -> 3CO_2(g) + 4H_2O(g)#. How many grams of water can be produced from the complete combustion of 2.0 moles of #C_3H_8(g)#?
• One reaction that produces hydrogen gas can represented by the following unbalanced chemical equation: #Mg(s) + HCl(aq) -> MgCl_2(aq) + H_2(g)#. What mass of HCl is consumed by the reaction of 2.50 moles of magnesium?
• Question #d24f9
• What is the mass of sulfate of ammonia that can be obtained from 1.00 tonne of sulfuric acid and 0.500 tonne of ammonia?
• A #5.57*g# mass of propane was combusted #24.1*g# oxygen gas. Can you represent the reaction by means of an equation, and identify the reagent in deficiency?
• What volume of 7.91M solution of nitric acid, HNO3 is just sufficient to react with 15.9 g of lead dioxide, PbO2 ? 2PbO2 + 4HNO3 ---> 2PbNO3 + 2H20 + O2
• Question #b256c
• What is a mixed valence iron cyanide compound?
• What molar quantity of #"potassium bromide"# results from oxidation of a #2.45*g# mass of potassium?
• Question #4eb61
• Question #8a001
• How many grams of chromium are needed to react with an excess of #CuSO_4# to produce 16.2 g Cu?
• 35.0 grams of thionyl chloride is placed in a glass containing 500.0 grams of water. After the reaction is complete how many grams of water will remain unreacted? How many grams of the thionyl chloride will remain unreacted?
• Many grams of #H_3PO_4# are produced when 12.0 moles of water react with an excess of #P_4O_10#? #P_4O_10(s) + 6H_2O(l) -> 4H_3PO_4(aq)#?
• When glucose is consumed, it reacts with oxygen in the body to produce carbon dioxide, water, and energy. How many grams of carbon dioxide would be produced if45 g of #C_6H_12O_6# completely reacted with oxygen?
• If 3.75 E 23 molecules of oxygen react, how many molecules of carbon dioxide will be produced?
• How many molecules of oxygen react with 20 molecules of propane?
• If #"10 g"# of #"AlCl"_3"# decomposes, how many grams of #"Cl"_2"# will be produced?
• Question #e15e7
• Question #5f09b
• Question #d0d70
• What are the balanced equations for the reaction between #"CO"# and #"O"_2"#, and the reaction between #"C + O"_2"#? What type of reactions are they?
• If #80*g# of magnesium chloride salt were isolated from the treatment of magnesium metal by excess hydrochloric acid, how much metal was present?
• Hydrochloric acid (HC) and sodium fluoride (NaF) react to produce hydrogen fluoride (HF) and sodium chloride (NaCl). How many moles of HF are produced per mole of HCl used?
• The decomposition of KClO3(s) into KCl(s) and O2(g) with an 85% yield. How many moles of KClO3 must be used to generate 3.50 moles of O2?
• Can someone help me with this question?
• Question #9c275
• What mass of solid aluminium is needed to react with excess H2SO4(aq) to produced 20.0 L of H2(g) at 1.0 atm and 298 K?
• Given #2.25xx10^24# formula units of #KClO_3#, what volume of dioxygen gas under standard conditions would result on heating?
• If 10.0 g of aluminum sulfide are produced by the reaction of aluminum and sulfur, how many grams or sulfur were needed?
• How does calcium carbide react with water? How much acetylene product will be obtained?
• Question #5aa17
• Question #2b580
• Question #8bddf
• Question #11ee0
• Question #2d295
• What is the percentage yield if #729*g# of tetrabromoethane is prepared from #60.3*g# acetylene and stoichiometric bromine?
• How many grams of iron would be produced if 2 moles of Fe2O3 reacted with 3 moles of CO?
• Question #fca37
• Question #45871
• In a combustion reaction, initially there were #77.8*g# of oxygen gas, and a #22.8*g# mass of carbon; #18.0*g# of oxygen remained after the reaction. If the carbon were completely oxidized, what mass of carbon dioxide resulted?
• Using the balanced equation #3Ba + Al2(SO_4)_3 -> 2Al + 3BaSO_4#, if 4g Ba react with 0.45 g #Al_2(SO_4)_3#, what is the excess reactant?
• For the reaction #2Na + 2H_2O -> NaOH + H_2#, how many grams of hydrogen are produced from 130 g of sodium?
• #2NH_3(aq) + H_2SO_4(aq) -> (NH_4)_2SO_4(aq)#. How many grams of ammonium sulfate can be produced if 60.0 mol of sulfuric acid react with an excess of ammonia?
• Question #0a813
• Oxidation of zinc produced a #47.5*mL# volume of dihydrogen at #1*atm# and #273.15*K#. What is the molar quantity of zinc that reacted?
• Question #97882
• What volume of 0.230 mol/L sodium sulfide solution do I need to react with 30.00 ml of 0.513 mol/L silver nitrate?
• How many millimeters of .230 M Na2S are needed to react with 30.00 mL of .513 M AgNO3, according to the following balanced equation? Na2S (aq) + 2AgNO3 (aq) ---> 2NaNO3 (aq) + Ag2S (s)
• Question #37cc4
• If a #25.6*g# mass of #"octane"# is completely combusted, what mass of carbon dioxide will result?
• Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 46.5 mL of hydrogen gas over water at 27 degrees Celsius and 751 mmHg. How many grams of aluminum reacted? The partial pressure of water at 27 C is 26.8 mmHg.
• For the reaction of #2"Al"(s)# with #3"Cl"_2(g)# to form #2"AlCl"_3(s)#, if #"20 atoms Al"# reacts with #"45 molecules"# of #"Cl"_2#, how many atoms of #"Al"# are needed to react with the excess #"Cl"_2#?
• Question #5bb41
• A volume of #5.6*dm^3# #CO_2(g)# is evolved from WHAT mass of solid calcium carbonate under standard conditions?
• What mass of #"potassium chlorate"# is required to produce a #2.24*L# volume of dioxygen gas at #"NTP"#?
• How many grams of #K_2CrO_4# are formed per gram of #K_2CO_3# used?
• Question #ec36a
• What volume of carbon dioxide would evolve from fierce heating of a #200*g# mass of #"calcium carbonate"# on heating under standard conditions of #"STP"#?
• Calculate the volume of ammonia gas produced at STP when 140g of nitrogen gas reacts with 30g of hydrogen gas.(atomic mass: N=14u,H=1u) how to do this?
• Question #6308e
• What mass of carbon dioxide will result from the decomposition of #300*g# of calcium carbonate?
• Is a #3.44*g# mass of oxygen gas sufficient to completely oxidize a #14.8*g# mass of propane?
• A #0.967*g# mass of an oxide of phosphorus contains #0.422*g# of phosphorus. What is its empirical formula?
• Question #de22e
• What is the stoichiometric equation for the oxidation of hydrogen peroxide by potassium permanganate?
• What is the mass of carbon dioxide required for the production of a #1*kg# mass of lithium carbonate from lithium hydroxide?
• Question #77fa3
• How do you solve this stoichiometry question?
• How do we use the molar mass of Oxygen to solve this stoichiometry problem?