Question

How much heat (in kJ) is released when 1.65 mol NaOH(s) is dissolved in water? The molar heat of solution of NaoH is -445.1 kJ/mol.

Answer 1

Answer:

-734.415kJ

Explanation:

Given the molar heat of solution we can work out the question below :

1 mole of Sodium hydroxide releases

- 445.1 kJ to dissolve.

We need to calculate how much heat in kJ is released when 1.65 moles of Sodium hydroxide is to dissolve.

We have a brief analysis below :

1 mole —> - 445.1 kJ

1.65 moles —>?

To solve this we use cross multiplication as follows :

1.65 × - 445.1 = - 734.415 kJ

Therefore 1.65 molar Sodium Hydroxide releases - 734.415kJ when dissolved in water.

Answer 2

Answer:-7.34 x 10^2 kJ

Explanation: