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Equilibrium

Question
CBSEENCH11008082
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The equilibrium constant (Kc) for the reaction, N2(g) + O2 (g) → 2NO (g) at temperature T is 4 x 10-4. The value of Kc for the reaction NO space left parenthesis straight g right parenthesis space rightwards arrow 1 half space straight N subscript 2 space left parenthesis straight g right parenthesis space plus 1 half straight O subscript 2 space left parenthesis straight g right parenthesis at the same temperature is

  • 0.02

  • 2.5 x 102

  • 4 x 10-4

  • 50.0

Solution

D.

50.0

straight N subscript 2 space left parenthesis straight g right parenthesis space plus space straight O subscript 2 space left parenthesis straight g right parenthesis space rightwards arrow space 2 NO space left parenthesis straight g right parenthesis straight K subscript straight c space equals space fraction numerator left square bracket NO right square bracket squared over denominator left square bracket straight N subscript 2 right square bracket left square bracket straight O subscript 2 right square bracket end fraction space equals space 4 space straight x 10 to the power of negative 4 end exponent 2 space NO left parenthesis straight g right parenthesis space rightwards arrow space straight N subscript 2 space left parenthesis straight g right parenthesis space plus space straight O subscript 2 space left parenthesis straight g right parenthesis straight K subscript straight c apostrophe space equals space 1 over straight K subscript straight c space equals space fraction numerator left square bracket straight N subscript 2 right square bracket left square bracket straight O subscript 2 right square bracket over denominator left square bracket NO subscript 2 right square bracket end fraction space equals space fraction numerator 1 over denominator space 4 space straight x 10 to the power of negative 4 end exponent end fraction space equals space 10 to the power of 4 over 4 NO space left parenthesis straight g right parenthesis space rightwards arrow 1 half space straight N subscript 2 space left parenthesis straight g right parenthesis space plus space 1 half space straight O subscript 2 space left parenthesis straight g right parenthesis straight K subscript straight c apostrophe apostrophe space equals space fraction numerator left square bracket straight N subscript 2 right square bracket to the power of 1 divided by 2 end exponent left square bracket straight O subscript 2 right square bracket over denominator left square bracket NO subscript 2 right square bracket squared end fraction space equals space square root of straight K subscript straight c apostrophe end root space equals space square root of 10 to the power of 4 over 4 end root space equals space 100 over 2 space equals space 50

Some More Questions From Equilibrium Chapter

What kind of molecules in a liquid can evaporate?

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?

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