Question

6.24 g of ethanol are vaporized by supplying 5.89 kJ of heat energy. What is enthalpy of vaporization of ethanol? (43.5 kJ mol⁻¹)

Answer 1

Answer:

Explanation:

Given 6.24 g of ethanol are vaporized by supplying 5.89 k J of heat energy. What is enthalpy of vaporization of ethanol?

We know that according to question

6.24 g of ethanol are vaporized by supplying 5.89 KJ of heat energy.

Heat vaporization for one mole will be 5.89 / 6.24 = 0.943

Now 1 molar mass of ethanol is 46 g

Therefore Δ H = 46 x 0.943

                     = 43.41 KJ / mol