Equilibrium Question 766
Question: 3.2 moles of hydrogen iodide were heated in a sealed bulb at $ 444{}^\circ C $ till the equilibrium state was reached. Its degree of dissociation at this temperature was found to be 22% The number of moles of hydrogen iodide present at equilibrium are
Options:
A) 2.496
B) 1.87
C) 2
D) 4
Show Answer
Answer:
Correct Answer: A
Solution:
$ 2HI\rightarrow H_2+I_2 $ . is 22% decomposed,
$ \therefore \frac{3.20\times 22}{100}=0.704 $
$ ( 3.2-0.704 ) $ is equal to HI present at equilibrium which is = 2.496
