MHT CET Chemistry question
20 mL solution of 0.1 M ferrous sulphate was completely oxidised using a suitable oxidising agent. What is the number of electrons exchanged? [MH CET 2014]
Answer: (D)
Solution
Moles of + = 0.020 × 0.1 = 2 × ; + → + + , so electrons = 2 × × 6.022 × = 1.204 × ;
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