105cm3 of hydrogen is obtained from the reaction of 0.3g of zinc with excess dilute H2SO4 acid at 85°c.What is the volume of the gas at room temperature?

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Paul G. Share
Jan 8, 2018

Answer:

87mL

Explanation:

Charles Law states that Volume and temperature are related according to the following equation:
#V_1/T_1 = V_2/T_2#
or #(V_1T_2)/T_1 =V_2#

**note that temperature must use the Unit Kelvin (can't have a negative volume!) and not Celsius.

#T_1#=#85^o#C = 358K
#T_2#=#25^o#C = 298K (this is a standard)
#V_1#=#105cm^3#

#V_2#= #(105cm^3*298K)/(358K)# = #87cm^3#

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