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Ideal Gas Equation

CaC2 +H2O → C...

Question

$C a C_{2} + H_{2} O \to C a O + H C \equiv C H$ $n (C H \equiv C H) + n H_{2} \to - (C H_{2} - C H_{2})_{n} -$ Polyethylene can be produced from calcium carbide according to the given sequence of reactions.
The mass of polyethylene that can be produced from $20.0$ kg of pure $C a C_{2}$ is :

6.75

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7.75

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8.75

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9.75

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Solution

The correct option is C $8.75$ kg
From the given sequence of reactions, it can be seen that one mole of $C a C_{2}$ gives one mole of polyethylene.

So, $20$ kg will give moles of $C a C_{2} = \frac{20000}{64} m o l e s =$ number of moles of polyethylene

Mass of polyethylene $= n \times 28 = \frac{20000}{64} \times 28 = 8.75$ kg

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