Question
Zn + 2 HCl = H2 + ZnCl2 / When 25.0 g of Zn reacts, how many L of H2 gas are formed at 25 degrees Celsius and a pressure of 854 mmHg?
Answers
DrBob222
mols Zn = grams/atomic mass Zn = ?
mols H2 formed = same as mols Zn (look at the 1 mol Zn forming 1 mol H2)
Substitute mols H2 into PV = nRT at the conditions listed and solve for volume in L. Remember T must be in kelvin and P in atmospheres for V to come out in L. Use 0.08206 L*atm/mol*K for R
mols H2 formed = same as mols Zn (look at the 1 mol Zn forming 1 mol H2)
Substitute mols H2 into PV = nRT at the conditions listed and solve for volume in L. Remember T must be in kelvin and P in atmospheres for V to come out in L. Use 0.08206 L*atm/mol*K for R
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