The chemical formulae for Freon -12 is

Question

Question

This question was previously asked in

UKPSC JE Mechanical 2013 Official Paper II

Answer 1

Concept:

General Chemical formula of a refrigerator is CmHnFpClq

And designation to represent refrigerators as

R - (m - 1)(n + 1)p

And n + p + q = 2 m + 2

Calculation:

Given:

Refrigerant Freon -12 = R - 012

As we know, R - (m - 1)(n + 1)p

m - 1 = 0 ⇒ m = 1

n + 1 = 1 ⇒ n = 0

p = 2

Now, n + p + q = 2m + 2

0 + 2 + q = 2 × 1 + 2

∴ q = 2

∴ CmHnFpClq = CCl₂F2