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Accelerate NEET 2020: Electrochemistry-05(03.10.2019)

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Question 1

An electrolysis of a oxytungsten complex ion using 1.10 A for 40 min produces 0.838 g of tungsten. What is the charge on tungsten in the material? (Atomic weight : W = 184)

Question 2

Total charge required for the oxidation of two moles Mn₃O₄ into MnO₄^3- in presence of alkaline medium is :

Question 3

How much quantity of electricity is required to completely oxidise the 0.1 mol compound?

Question 4

The mass of silver (molar mass: 108 g mol^–) deposited on passing 10 A of current for 10 h in the solution of silver nitrate is about

Question 5

A 10 A current is passed through CuSO₄ solution, AgNO₃ solution and acidulated water which are connected in series. After some time 2.24L H₂ gas is evolved in acidulated water at NTP. Calculate the weight of Cu and Ag deposited respectively.

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