Q.

AB3 (g) is dissociates as AB3(g)⇌AB2(g)+12B2(g),when the initial pressure of ,AB2, is 800 torr and the total pressure developed at equilibrium is 900 torr. 'what fraction of AB3(g) is dissociated?

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a

10%

b

20%

c

25%

d

30%

answer is B.

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Detailed Solution

AB3(g) ⇌ AB2(g)+12B2(g) at eq.; 800-x        x          x/2 800-x+x+x2=900⇒x=200 % dissociated =200800×100=25
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AB3 (g) is dissociates as AB3(g)⇌AB2(g)+12B2(g),when the initial pressure of ,AB2, is 800 torr and the total pressure developed at equilibrium is 900 torr. 'what fraction of AB3(g) is dissociated?