In a Volumetric Analysis Experiment,an Acidic Aqueous Solution of Methanol

question 31

Multiple Choice

In a volumetric analysis experiment,an acidic aqueous solution of methanol (CH₃OH) is titrated with a solution of potassium dichromate (K₂Cr₂O₇) according to the following balanced chemical equation:
2K₂Cr₂O₇(aq) + 8H₂SO₄(aq) + 3CH₃OH(aq) → 2Cr₂(SO₄) ₃(aq) + 11H₂O(l) + 3HCOOH(aq) + 2K₂SO₄(aq)
It required 49.73 mL of 0.0153 M K₂Cr₂O₇ to reach the endpoint.What mass of CH₃OH was present initially?

• A)0.0365 g
• B)0.735 g
• C)0.326 g
• D)0.0243 g
• E)0.0162 g

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