Calculate the amount of heat needed to boil 124. g of acetic acid ( HCH 3 CO 2 ), beginning from a temperature of 25.0 °C .

Question

Calculate the amount of heat needed to boil 124.g

of acetic acid (HCH3CO2

), beginning from a temperature of 25.0°C

. Round your answer to 3

significant digits. Also, be sure your answer contains a unit symbol.

Answer 1

You’ll need to know the specie heat for acetic acid as well as the ΔHVap and the boiling point (bp). Then use

q = mCΔT + mΔHvap where m = 124 g and ΔT = bp - 25 deg