RMgI when treated with ice cold water liberated a gas which occupied 1.4 dm³/g at STP. The gas produced is further reacted with iodine in presence of to give compound (X). Compound (X) in presence of Na and dry ether produced compound (Y). Molar mass of compound (Y) is ________ g mol. (Nearest integer)
← JEE Main 2026 · 5 Apr · Shift 2
ChemistryInteger+4 / -1Question 72 of 75
JEE Main 2026 · 5 Apr · Shift 2, Chemistry question 72
Answer and worked solution
Official answer: 30
The gas. 1 g occupies 1.4 dm³ at STP, so its molar mass is g mol: methane. So RMgI is .
X. with (which removes HI) gives .
Y. The Wurtz reaction, in dry ether, gives ethane , with M = 30.
Answer: 30