Calculate the number of milliliters of 0.687 M KOH required to precipitate all of the Co²+ ions in 117 mL of 0.732 M Co(NO3)2

Question

Calculate the number of milliliters of 0.687 M KOH required to precipitate all of the Co²+ ions in 117 mL of 0.732 M Co(NO3)2 solution as Co(OH)2. The equation for the reaction is:
Co(NO3)₂(aq) + 2KOH(aq) ---> Co(OH)₂(s) + 2KNO3(aq)

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