Question

Which substance in the table undergoes the greatest temperature change when the same mass of each substance absorbs the same quantity of heat? Which substance in the table undergoes the greatest temperature change when the same mass of each substance absorbs the same quantity of heat?

CaCO3(s)

CO2(g)

N2(g)

CH4(g)

Al(s)

H2O(l)

Fe(s)

Hg(l)

Answer 1

Lower the specific heat of a substance, greater the change in temperature it undergoes

Now, specific heat capacity of CaCO₃ = 0.81994 J/g/⁰C

specific heat capacity of CO₂ = 0.844 J/g/⁰C

specific heat capacity of N₂ = 1.04 J/g/⁰C

specific heat capacity of CH₄ = 2.22 J/g/⁰C

specific heat capacity of Al = 0.9 J/g/⁰C

specific heat capacity of H₂O = 4.186 J/g/⁰C

specific heat capacity of Fe = 0.45 J/g/⁰C

specific heat capacity of Hg = 0.14 J/g/⁰C

Thus, Hg undergoes the greatest temperature change