Question

For the reaction 2Al+3H2SO4->Al2(SO4)3 + 3H2 how many grams of hydrogen are produced if 0.8 mole of aluminium reacts with 1.0 mole of sulphuric acid?

Answer 1

Answer:

2Al + 3H2SO4---- Al2(SO4)3 + 3H2

No. of moles of Al: 0.8

No. of moles of H2SO4: 1

Applying Limiting reagent concept

0.8/2 > 1/3

Thus H2SO4 is LR

Thus ,

By stoichiometry,

No. of moles of H2SO4/3= no. of moles of H2/3

No. of moles of H2 = 1 moles

Thus weight = 1*2= 2 gram