A sample of a polyhydric alcoholic compound of molar mass gave of gas at STP. The number of alcoholic hydrogen present in compound is

Question

A  sample of a polyhydric alcoholic compound  of molar mass  gave  of  gas at STP. The number of alcoholic hydrogen present in compound  is

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Strategy:
 Alcohols react with Sodium to release Hydrogen gas, where each hydroxy group () contributes half a mole of . Compare the moles of Hydrogen produced to the moles of the alcohol reacted to find the atomicity of exchangeable Hydrogen.

Step 1: Calculate Moles of X
Moles of X .

Step 2: Calculate Moles of } \ce{H2} 	ext{ at STP
Moles of .

Step 3: Determine number of H atoms (x)
Each mole of X gives  moles of .

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