0.037g of an alcohol, R-OH was added to C₂H₅Mgl and the has evolved measured 11.2cc

⇦

⇨

0.037g of an alcohol, R-OH was added to C₂H₅Mgl and the has evolved measured 11.2cc at STP. The molecular mass of R-OH will be

Options

(a) 47
(b) 79
(c) 77
(d) 74

Correct Answer:

74

Explanation:

R—OH + C₂H₅Mgl → C₂H₆ + RMgl
0.037 11.2 cc
11.2 cc gas evolved by alcohol= 0.037 g
22400 cc gas will be evolved by alcohol
= 0.037/11.2 x 22400
= 74 g

Related Questions:

1. In acidic medium, H₂O₂ changes Cr₂O₇²⁻ to CrO₅ which has two
2. A mixture of two salts is not soluble in water but dissolves completely in dilu
3. Carborundum is
4. At 25⁰C the pH value of a solution is 6, then the solution is
5. In the brown ring test for the nitrate ion, the brown colour is due to

Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Basic Concepts of Chemistry (94)
Subject: Chemistry (2512)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends