The [IO_8^2] in a satureated solution of Ce(IO_3)_3 is 5.76 x 10^-3 M. Calculate

Question

The [IO_8^2] in a satureated solution of Ce(IO_3)_3 is 5.76 x 10^-3 M. Calculate the K_op for Ce(IO_3)_3.3.67 x 10^-10 3.30 x 10^-9 1.91 x 10^-2 1.92 x 10^-3 none of these Calculate the concentration of Al^3+ in a saturated aqueous solution of Al(OH)_3 (K_op = 1.8 x 10^-32). 6.7 x 10^-9 1.7 X 10^-34 1.2 x 10^-8 6.7 x 10^-34 5.1 x 10^-9 Which of the following salts shorn the lowest solubility in water? (K_op values: Ag_2 S = 1.6 x 10^-13) Bi_2 S_3 Ag_2 S MnS HgS Mg(OH)_2 Which of the following statements is true? The total energy and entropy of the universe are both increasing The total energy of the universe are both increasing. The total energy of the universe is increasing, but the entropy is constant. The total energy of the universe increases, while die entropy decreases. The total energy of the universe is constant, but the entropy is increasing. None of these. At constant pressure, the following reaction 2NO_2(g) rightarrow N_2O_4(g) is exothermic. The reaction (as written) is always spontaneous spontaneous at low temperatures, but not high temperatures spontaneous at high temperatures, but not low. Temperatures never spontaneous cannot tell

Explanation / Answer

1.

[IO3-] = 5.76*10^-3 M

for

Ce(IO3)3 <-> Ce+3 + 3(IO3-)

Ksp = [Ce+3][IO3-]^3

[Ce+3] = 1/3*0.00576= 0.00192

Ksp = (0.00192)(0.00576)^3

Ksp = 3.6691*10^-10

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