When a equimolar mixture of Cu 2 S and CuS is titrated with Ba(MnO 4 ) 2 in acidic…
Chemistry · JEE Advanced · NTA Exams — Some Basic Concepts in Chemistry
When a equimolar mixture of Cu2S and CuS is titrated with Ba(MnO4)2 in acidic medium, the final product’s contains Cu2+, SO2 and Mn2+. If the mol. wt. of Cu2S, CuS and Ba(MnO4)2 are M1, M2 and M3 respectively then:
- eq. wt. of Cu2S is \(\frac{\mathrm{M}_{1}}{8}\)
- eq. wt. of CuS is \(\frac{M_{2}}{6}\)
- eq. wt. of Ba(MnO4)2 is \(\frac{M_{3}}{5}\)
- Cu2S and CuS both have same equivalents in mixture
Answer
(A) eq. wt. of Cu 2 S is M _ 1 8, (B) eq. wt. of CuS is M_ 2 6
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