Question

The coefficient of volume expansion of glycerin is 49 x 10^-5 C^-1. What is the fractional change in its density for a 30°C rise in temperature?

Answer 1

Here,

r = 49 x 10^-5°C^-1;

ΔT = 30°C

∴ Fractional change, Δρ/ρ = γΔT

= 49 x 10^-5 x 30 = 1.47 x 10^-2