Question

The free energy change for the following reactions are given below,

$H_{2}(g) + Cl_{2}(g)$

$2HCl(g)$

$H_{2}(g) + \frac{1}{2}O_{2}(g)$

What is the standard free energy change for the reaction $H_{2}O(l)$

• A. – 209 kJ
• B. – 2259 kJ
• C.
  • 2259 kJ
• D. 209 kJ

Answer 1

Answer: (D)

209 kJ

Answer 2

By 2× (ii) – (i) – (iii)

$2SO_{3}(g)$.