How many grams of hydrogen is required to saturate one mole of acetylene?

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10g

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Solution

The correct option is D 4g
$C_{2} H_{2} + 2 H_{2} \to C_{2} H_{6}$
2 moles of hydrogen are required to saturate one mole of acetylene.
1 mole of $H_{2}$ has 2g of $H_{2}$ , therefore 4g of hydrogen are required to saturate one mole of acetylene.

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