Question #a903c

2 Answers
May 26, 2017

Answer:

#NaOH + HNO_3 -> H_2O + NaNO_3#

Explanation:

This is a double displacement reaction.

This means the cations will be switched around (or the anions if you prefer).

This means the Na+ ion is switched with the H+ ion.

The final answer will then be #NaOH + HNO_3 -> H_2O + NaNO_3#

May 26, 2017

Answer:

#"NaNO"_3 + "H"_2"O"#

Explanation:

This is an example of a neutralization reaction, which is a subset of double displacement reactions.

A neutralization reaction is when an acid and a base react to form water and salt.

Taking the example problem,

#color(white)(----)NaOH + HNO_3 -> NaNO_3 + H_2O#

#"NaOH"# (a strong base) and #"HNO"_3# (a strong acid) react in a 1:1 mole ratio, where 1 mole of of #"NaOH"# will produce 1 mole of #[OH^-]# in solution and 1 mole of #"HNO"_3# will produce 1 mole of #[H^+]# in solution.

The solution should produce a #"pH"# of #7# since equal amounts of the acid and base react and neither the acid or the base is in excess, therefore

#color(white)(aaaaaaaaaaaaaaaa)[OH^-] = [H_3stackrel"+"O]#