A gas is found to have the formula (CO)x. Its vapour density is 70. The value of x will be

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answer is C.

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Detailed Solution

Vapour density = 70Molecular mass = 2x 70 = 140Formula is [CO]xTherefore molecular mass = (12 + 16)x = 140 = x × 28 = 140 ∴ x = 5

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