Asked by jas
Hydrogen gas is produced when zinc reacts with sulfuric acid:
Zn(s)+H_2SO_4(aq)---ZnSO_4(aq)+H_2(g)
If 160 mL of wet H_2 is collected over water at 24 Celsius and a barometric pressure of 739 torr, how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 torr.)
Zn(s)+H_2SO_4(aq)---ZnSO_4(aq)+H_2(g)
If 160 mL of wet H_2 is collected over water at 24 Celsius and a barometric pressure of 739 torr, how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 torr.)
Answers
Answered by
DrBob222
Use PV = nRT to solve for n = number of moles H2, then use stoichiometry (link supplied for a worked example) to calculate grams Zn used.
http://www.jiskha.com/science/chemistry/stoichiometry.html
http://www.jiskha.com/science/chemistry/stoichiometry.html
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