write the equation. Each mole of Zn produces 1 mole of H2
So, how many moles of Zn is 260g ?
If there are n moles, then they will occupy 22.4n L of space.
What volume of hydrogen is produced at s.t.p when 260g of zinc reacts with excess HCl acid.
2 answers
Zn + 2HCl ==> ZnCl2 + H2
mols Zn = grams/atomic mass = 260/65.38 = approx 4 but that's an estimate only.
Convert mols Zn to mols H2 produced. That's 1:1; therefore, mols Zn = mols H2.
You know 1 mol H2 @ stp occupies 22.4 L so
mols H2 x 22.4 = L H2 @ STP.
mols Zn = grams/atomic mass = 260/65.38 = approx 4 but that's an estimate only.
Convert mols Zn to mols H2 produced. That's 1:1; therefore, mols Zn = mols H2.
You know 1 mol H2 @ stp occupies 22.4 L so
mols H2 x 22.4 = L H2 @ STP.