Question

Write the expressions for equilibrium constant for the reactions:
$left parenthesis straight i right parenthesis space straight H subscript 2 left parenthesis straight g right parenthesis space plus space space straight I subscript 2 left parenthesis straight g right parenthesis space space space space space rightwards harpoon over leftwards harpoon space space 2 HI left parenthesis straight g right parenthesis left parenthesis ii right parenthesis space straight N subscript 2 left parenthesis straight g right parenthesis space plus space 3 straight H subscript 2 left parenthesis straight g right parenthesis space space rightwards harpoon over leftwards harpoon space space 2 NH subscript 3 left parenthesis straight g right parenthesis left parenthesis iii right parenthesis space PCl subscript 5 left parenthesis straight g right parenthesis space space space rightwards harpoon over leftwards harpoon space space space space PCl subscript 3 left parenthesis straight g right parenthesis space plus space Cl subscript 2 left parenthesis straight g right parenthesis$

Solution

Expression for equilibrium constant for the reactions:
$left parenthesis straight i right parenthesis space straight K subscript straight c space equals space fraction numerator open square brackets HI close square brackets squared over denominator open square brackets straight H subscript 2 close square brackets space open square brackets straight I subscript 2 close square brackets end fraction left parenthesis ii right parenthesis space straight K subscript straight c space equals space fraction numerator open square brackets NH subscript 3 close square brackets cubed over denominator open square brackets straight N subscript 2 close square brackets space open square brackets straight H subscript 2 close square brackets cubed end fraction left parenthesis iii right parenthesis space straight K subscript straight c space equals space fraction numerator open square brackets PCl subscript 3 close square brackets space open square brackets Cl subscript 2 close square brackets over denominator open square brackets PCl subscript 5 close square brackets end fraction$

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Equilibrium

Some More Questions From Equilibrium Chapter

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?

What condition favours a reversible reaction?

What is a backward reaction?

What type of equilibrium is attained in a reversibe chemical change?

What is meant by a system at dynamic equilibrium?

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