10 g of hydrogen and 64g of oxygen were filled in a steel vessel and exploded. Amount of water produced in this reaction will be

Options

A. 3 mol
B. 4 mol
C. 1 mol
D. 2 mol.

Answer

B

Explanation

`underset("10g (5 mol)")(2H_2) + underset("64g(2 mol)")(O_2) to 2H_2O`
Limiting reagent is `O_2`
1mol of `O_2` gives 2 moles `H_2O`
` therefore ` 2 moles of `O_2` will give 4 moles `H_2O`