A solution is prepared by mixing 50.0 mL of 0.50 M Mg(NO3)2 with 50.0 mL of 0.50 M Mn(NO3)2. Sodium hydroxide is added to the mixture. Which hydroxide precipitates first and what concentration of hydroxide ions present in solution will accomplish the separation? Ksp 8.9x10-12 for Mg(OH) 2, Ksp=2.0x10-13 for Mn (OH)2
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![A solution is prepared by mixing 50.0 mL of 0.50 M Mg (NO3)2 with 50.0 mL of 0.50 M
Mn(NO3)2. Sodium hydroxide is added to the mixture. Which hydroxide precipitates
first and what concentration of hydroxide ions present in solution will accomplish the
separation?
Ksp=8.9x10-12 for Mg(OH)2, Ksp=2.0x10-13 for Mn(OH)2
Mg(OH)2; [OH] = 1.0 x 10-5 M
Mg(OH)2; [OH"]= 1.0 × 104 M
Mn (OH)₂; [OH] = 1.0 × 10-8 M
Mn(OH)2; [OH-] = 1.0 x 10-6 M
Mn(OH) 2; [OH"]= 1.0 × 10¹7 M
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