Calculate the concentration of ions in the following saturated solutions. (a) [I

Question

Calculate the concentration of ions in the following saturated solutions. (a) [I ] in AgI solution with [Ag+] = 7.2 10-9 M

(b) [Al3+] in Al(OH)3 solution with [OH ] = 2.2 10-9 Calculate the concentration of ions in the following saturated solutions. (a) [I ] in AgI solution with [Ag+] = 7.2 10-9 M

(b) [Al3+] in Al(OH)3 solution with [OH ] = 2.2 10-9 Calculate the concentration of ions in the following saturated solutions. (a) [I ] in AgI solution with [Ag+] = 7.2 10-9 M

(b) [Al3+] in Al(OH)3 solution with [OH ] = 2.2 10-9

Explanation / Answer

Ans. (a) AgI(aq) = Ag+(aq) + I- (aq)

AgI dissociates into Ag+ and I- and concentration of Ag+ and I- will be equal

[I-] = [Ag+] = 7.2 * 10^-9 M

(b) Al(OH)3 = Al3+ + 3OH-

[Al3+] = (1/3) * [OH-] = 0.333 * 2.2 * 10^-9 = 7.326 * 10^-10 M

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