1. Tardigrade
  2. Question
  3. Chemistry
  4. An organic compound (A) contains only C , H and O atoms. On reaction with excess of CH 3 MgI, (A) gives a gas ( X ) whose volume under STP conditions was found to be 67.2 litre. The maximum number of hydroxyl groups in the compound (A) are

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Q. An organic compound $(A)$ contains only $C , H$ and $O$ atoms. On reaction with excess of $CH _{3} MgI$, $(A)$ gives a gas $( X )$ whose volume under $STP$ conditions was found to be $67.2$ litre. The maximum number of hydroxyl groups in the compound $(A)$ are

Alcohols Phenols and Ethers

Solution:

$\frac{67.2}{22.4}=$ mole of gas $(X)$ evolved $=3$ mole of gas $(X)$ The number of active H- atom present in a molecule is equal to the number of moles of gas obtained i.e. no. of $- OH$ groups in compound $( A )=3$.