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Equilibrium

Question
CBSEENCH11008043
Wired Faculty App

The equilibrium constant at 298 K for a reaction A+B ⇌ C+D is 100. If the initial concentration of all the four species were 1 M each, then equilibrium concentration of D (in mol L−1 ) will be:

  • 0.818

  • 1.818

  • 1.182

  • 0.182

Solution

B.

1.818

space space space space space space space space space space space space space space space space space space space space space straight A space space space space space space plus space space space straight B space rightwards harpoon over leftwards harpoon for space space space space space space space space space of space straight C space space plus space space space space space straight D subscript Intially space at space straight t space equals 0 space space space space space space space space 1 space space space space space space space space space space space space space space space space 1 space space space space space space space space space space space space space space space space space space space 1 space space space space space space space space space space space space space space space 1 end subscript to the power of at space equilibrium space space space space space space space 1 minus straight x space space space space space space space space space space 1 minus straight x space space space space space space space space space space space space space space space 1 plus straight x space space space space space space space space space space space 1 plus straight x end exponent straight K subscript eq space equals space fraction numerator left square bracket CD right square bracket over denominator left square bracket straight A right square bracket left square bracket straight B right square bracket end fraction space equals fraction numerator left parenthesis 1 plus straight x right parenthesis left parenthesis 1 plus straight x right parenthesis over denominator left parenthesis 1 minus straight x right parenthesis left parenthesis 1 minus straight x right parenthesis end fraction space equals space fraction numerator left parenthesis 1 plus straight x right parenthesis squared over denominator left parenthesis 1 minus straight x right parenthesis squared end fraction Or space 100 space equals space open parentheses fraction numerator 1 plus straight x over denominator 1 minus straight x end fraction close parentheses squared 10 space equals space fraction numerator 1 plus straight x over denominator 1 minus straight x end fraction or space 10 minus 10 straight x space equals space 1 space plus space straight x 10 minus 1 space space equals space straight x space plus space 10 straight x 9 space equals space 11 space straight x straight x space equals space 9 over 11 space equals space 0.818 space left square bracket straight D right square bracket space equals space 1 space plus straight x space equals space 1 space plus space 0.818 space equals space 1.818 space space space

Some More Questions From Equilibrium Chapter

Name the factors on which vapour pressure of any liquid depends.

Which measurable property becomes constant in water vapour equilibrium?

Give an example from daily life in which there is gas solution equilibrium?

A crystal of common salt of a given mass is kept in its aqueous solution. After 24 hours, its mass remains the same. Is the crystal in equilibrium with the solution?

What is the role of forward and backward reactions at equilibrium of a reversible reaction?

What is a forward reaction?

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