A 100 mL solution of CH 3 CH 2 MgBr on treatment with methanol produces 2.24 mL of a gas at STP. The weight of gas produced is mg. [nearest integer]

Question

A 100 mL solution of CH 3 CH 2 MgBr on treatment with methanol produces 2.24 mL of a gas at STP. The weight of gas produced is mg. [nearest integer] (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

CH 3- CH 2- MgBr + CH 3 OH longrightarrow CH 3- CH 3+ Mg < OCH 3Br n =(2.24 × 10-3/22.4)=10-4 W = n × M =10-4 × 30=3 mg

Q. A $100 m L$ solution of $C H_{3} C H_{2} M g B r$ on treatment with methanol produces $2.24 m L$ of a gas at STP. The weight of gas produced is ______ $m g$ . [nearest integer]

$C H_{3} - C H_{2} - M g B r + C H_{3} O H ⟶$
$C H_{3} - C H_{3} + M g <_{B r}^{OC H_{3}}$
$n = \frac{2.24 \times 1 0 ^{- 3}}{22.4} = 1 0^{- 4}$
$W = n \times M$
$= 1 0^{- 4} \times 30 = 3 m g$

Q. A 100mL solution of CH3​CH2​MgBr on treatment with methanol produces 2.24mL of a gas at STP. The weight of gas produced is ______mg. [nearest integer]

CH3​−CH2​−MgBr+CH3​OH⟶ CH3​−CH3​+Mg<BrOCH3​​ n=22.42.24×10−3​=10−4 W=n×M =10−4×30=3mg

Q. A $100 m L$ solution of $C H_{3} C H_{2} M g B r$ on treatment with methanol produces $2.24 m L$ of a gas at STP. The weight of gas produced is ______ $m g$ . [nearest integer]

$C H_{3} - C H_{2} - M g B r + C H_{3} O H ⟶$
$C H_{3} - C H_{3} + M g <_{B r}^{OC H_{3}}$
$n = \frac{2.24 \times 1 0 ^{- 3}}{22.4} = 1 0^{- 4}$
$W = n \times M$
$= 1 0^{- 4} \times 30 = 3 m g$