One Step in the Isolation of Pure Rhodium Metal (Rh)is

question 72

Multiple Choice

One step in the isolation of pure rhodium metal (Rh) is the precipitation of rhodium(III) hydroxide from a solution containing rhodium(III) sulfate according to the following balanced chemical equation:
Rh₂(SO₄) ₃(aq) + 6NaOH(aq) → 2Rh(OH) ₃(s) + 3Na₂SO₄(aq)
What mass of sodium hydroxide is required to precipitate 68.0 g of rhodium(III) hydroxide from a solution containing excess rhodium(III) sulfate?

• A)5.88 g
• B)53 g
• C)17.6 g
• D)204 g
• E)68 g

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