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Q.

For the equilibrium system,2HX(g)⇌H2(g)+X2(g)the equilibrium constant is 1.0×10-5.What will be the concentration of HX if the equilibrium concentrations of H2 and X2 are 1.2×10-3M and 1.2×10-4M respectively?

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a

1.2×10-4M

b

1.2×10-3M

c

1.2×10-2M

d

1.2×10-1M

answer is D.

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Detailed Solution

K=H2X2[HX]210-5=1.2×10-31.2×10-4[HX]2or, [HX]2=(1.2)2×10-2or, [HX]=1.2×10-1M

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