Question #96024
Solid sodium hydroxide is slowly added to 50.0 mL of a 0.0356 M chromium(III) nitrate solution. The concentration of hydroxide ion required to just initiate precipitation is
1
Expert's answer
2019-10-08T07:40:43-0400

Cr(NO3)3 + 3NaOH → Cr(OH)3 + 3NaNO3

n= Cm x V = 0.0356 x 0.05 = 0.00178.

1:3 = 0.00178 x 3 = 0.00534


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