Question

What is the weight of iron and water required to produce 100kg of hydrogen ?​

Answer 1

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Explanation:

The method of production of Hydrogen , in here shall be supposed as per the equation 2 H2O —→ 2H2 + O2, a decomposition reaction.

A molar ratio can be helpful to determine the mass of obtained product.

1 mol H2O produces 1 mol H2.

=> 18 g of H2O gives 2g of H2.

By unitary method, 1kg of H2 ie 1000g of H2 is 500 mol of the H2 gas.

Thus,500 mol of H20 ie 500 X 18g = 9000g ie 9 kg of H20 is required for this method of producing of H2 from H20.

Other cost effective methods are hydrolysis of hydrides (CaH2 ..) and steam reforming of light hydrocarbons ( CH4) etc.