Question

What is the expression for the volume of hydrogen gas, in dm3, produced at stp when 0.24 g of magnesium reacts with excess hydrochloric acid solution? Mg (s) + 2hcl (aq) mgcl2 (aq) + h2 (g) molar volume of an ideal gas at stp = 22.7 dm3mol-1?

Answer 1

2.27 dm 3 /mole

Explanation:

if 22.7dm3 volume of mg react with 22.7×2 dm3 of Hcl then he produce 22.7dm3 H2

but mg react only 2.27dm3

it will be produce 2.27dm3 H2