The equilibrium constants for the reaction, A2 leftharpoons 2 A at 500 K and 700 K are 1 × 10-10 and 1 × 10-5. The given reaction is

Question

The equilibrium constants for the reaction, A2 leftharpoons 2 A at 500 K and 700 K are 1 × 10-10 and 1 × 10-5. The given reaction is (A) exothermic (B) slow (C) endothermic (D) fast

Tardigrade Admin · Accepted Answer

For the reaction, A2 leftharpoons 2 A K=([A]2/[A2]) The value of equilibrium constant is very less and hence, the product concentration is also very less. So, the reaction is slow.

Q. The equilibrium constants for the reaction, $A_{2} ⇌ 2 A$ at $500 K$ and $700 K$ are $1 \times 1 0^{- 10}$ and $1 \times 1 0^{- 5}$ . The given reaction is

exothermic

slow

endothermic

fast

For the reaction,
$A_{2} ⇌ 2 A$
$K = \frac{[ A ] ^{2}}{[ A _{2} ]}$
The value of equilibrium constant is very less and hence, the product concentration is also very less.
So, the reaction is slow.

Q. The equilibrium constants for the reaction, A2​⇌2A at 500K and 700K are 1×10−10 and 1×10−5. The given reaction is