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Write the expression for the equilibrium constant K_c for each of the following reactions:

$2 Cu left parenthesis NO subscript 3 right parenthesis subscript 2 left parenthesis straight s right parenthesis space space space rightwards harpoon over leftwards harpoon space space space 2 CuO left parenthesis straight s right parenthesis space plus space 4 NO subscript 2 left parenthesis straight g right parenthesis space plus space straight O subscript 2 left parenthesis straight g right parenthesis$

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72.

Write the expression for the equilibrium constant K_c for each of the following reactions:
$space space CH subscript 3 COOC subscript 2 straight H subscript 5 left parenthesis aq right parenthesis plus space straight H subscript 2 straight O left parenthesis l right parenthesis space space space rightwards harpoon over leftwards harpoon space space space space CH subscript 3 COOH space left parenthesis aq right parenthesis space plus space straight C subscript 2 straight H subscript 5 OH left parenthesis aq right parenthesis$

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73.

Write the expression for the equilibrium constant K_c for each of the following reactions:
$Fe to the power of 3 plus end exponent left parenthesis aq right parenthesis space plus space 3 OH to the power of minus left parenthesis aq right parenthesis space space space leftwards harpoon over rightwards harpoon space Fe left parenthesis OH right parenthesis subscript 3 left parenthesis straight s right parenthesis$

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74.

Write the expression for the equilibrium constant K_c for each of the following reactions:
$straight I subscript 2 left parenthesis straight s right parenthesis space plus space 5 straight F subscript 2 space rightwards harpoon over leftwards harpoon space space 2 IF subscript 2$

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Long Answer Type

75.

It has been found that the pH of a 0.01 M solution of an organic acid is 4.15. Calculate the concentration of the anion, the ionisation constant of the acid and its pKa.

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