Lab 5: Molar Volume of an Ideal Gas
Remember to report data and calculated results to the correct number of significant figures.
1. Write the balanced equation for the reaction between solid zinc and aqueous hydrochloric
acid. Be sure to include physical states.
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)
2. Record and calculate the following for all three required trials.
a Molar mass of zinc (g/mol)
[General Rule: Use least 4 significant figures from periodic 65.38
table for determining molar mass]
b Under what conditions of temperature and pressure did you T= 21.5 ° C
measure volume? These are the conditions that the molar P = 1.000 atm
volume value is valid. Include units.
Trial 1 Trial 2 Trial 3
c Mass of zinc used (g) [Report all three sig figs] 0.100 0.150 0.200
d Volume of 6.0 M HCl used (mL) 100 100 100
e Volume of gas produced, measured at initial room 36.80 55.21 73.61
temperature (mL)
f Moles of zinc reactant calculated using the molar mass 0.00153 0.00229 0.00306
g Moles of HCl reactant calculated from M and V 0.60 0.60 0.60
h Identity of Limiting Reactant Zn Zn Zn
i Moles of hydrogen produced calculated using stoichiometry 0.00153 0.00229 0.00306
from limiting reactant (mol)
Show your work and answer for Trial 1 only:
1 mol H 2
0.00153 mol Zn x = 0.00153 mol H2
1 mol Zn
j Calculated Molar Volume of the ideal hydrogen gas at room 24.05 24.11 24.06
temperature (Volume/moles), expressed in units of L/mol,
calculated from your experimental data. [Report with 4
significant figures (one extra)]
Show your work and answer for Trial 1 only:
This study source was downloaded by 100000897367967 from CourseHero.com on 03-30-2025 09:41:01 GMT -05:00
https://www.coursehero.com/file/248121380/Lab-5-Molar-Volume-Assignmentdocx/
Remember to report data and calculated results to the correct number of significant figures.
1. Write the balanced equation for the reaction between solid zinc and aqueous hydrochloric
acid. Be sure to include physical states.
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)
2. Record and calculate the following for all three required trials.
a Molar mass of zinc (g/mol)
[General Rule: Use least 4 significant figures from periodic 65.38
table for determining molar mass]
b Under what conditions of temperature and pressure did you T= 21.5 ° C
measure volume? These are the conditions that the molar P = 1.000 atm
volume value is valid. Include units.
Trial 1 Trial 2 Trial 3
c Mass of zinc used (g) [Report all three sig figs] 0.100 0.150 0.200
d Volume of 6.0 M HCl used (mL) 100 100 100
e Volume of gas produced, measured at initial room 36.80 55.21 73.61
temperature (mL)
f Moles of zinc reactant calculated using the molar mass 0.00153 0.00229 0.00306
g Moles of HCl reactant calculated from M and V 0.60 0.60 0.60
h Identity of Limiting Reactant Zn Zn Zn
i Moles of hydrogen produced calculated using stoichiometry 0.00153 0.00229 0.00306
from limiting reactant (mol)
Show your work and answer for Trial 1 only:
1 mol H 2
0.00153 mol Zn x = 0.00153 mol H2
1 mol Zn
j Calculated Molar Volume of the ideal hydrogen gas at room 24.05 24.11 24.06
temperature (Volume/moles), expressed in units of L/mol,
calculated from your experimental data. [Report with 4
significant figures (one extra)]
Show your work and answer for Trial 1 only:
This study source was downloaded by 100000897367967 from CourseHero.com on 03-30-2025 09:41:01 GMT -05:00
https://www.coursehero.com/file/248121380/Lab-5-Molar-Volume-Assignmentdocx/
