Question

1. Name a substance having the highest specific heat capacity.
2. State its magnitude in (i) the C.G.S. system and the S.I. system.
3. State its magnitude in (i) calories in the C.G.S. system and the S.I. system.

Answer 1

(i) Water is the substance with the highest specific heat capacity.

(ii) Its magnitude is:

C.G.S. system: 4.2 J g⁻¹°C⁻¹ (or 1 cal g⁻¹°C⁻¹)

S.I. system: 4200 J kg⁻¹ K⁻¹

(iii) In calories:

C.G.S. system: 1 cal g⁻¹°C⁻¹

S.I. system: 1 kcal kg⁻¹°C⁻¹ which is equal to 1000 cal kg⁻¹°C⁻¹