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4g of hydrogen is burnt with 4g of oxygen.. How many grams of water can be formed?

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Detailed Solution

The balanced chemical reaction for formation of water is $2 H_{2} + O_{2} \to 2 H_{2} O$ .

2 mol H₂ reacts with 1 mole of O₂ and forms 2 mol of H₂O .

4 g of H will react with 32 g of oxygen.

But , only 4 g of oxygen are present.

Thus, oxygen is the limiting reagent.

$4 g of oxygen will give = \frac{4 \times 36}{32} = 4.5 g of water$

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