Chemistry Crash Course NEET>Chapter 9 - Electrochemistry>Level 3>Q 47

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IMPORTANT

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What is the reduction potential of ${Cu}^{+ 2} / Cu$ at $pH = 10$ ? $(K_{sp} of Cu (OH)_{2} = 1 \times 10^{- 18} & E_{{Cu}^{+ 2} / Cu}^{o} = 0.34 V)$

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Important Questions on Electrochemistry

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Chemistry Crash Course NEET>Chapter 9 - Electrochemistry>Level 1>Q 1

If one end of a piece of a metal is heated, the other end becomes hot after some time. This is due to

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Chemistry Crash Course NEET>Chapter 9 - Electrochemistry>Level 1>Q 2

A solid with high electrical and thermal conductivity from the following is:

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Chemistry Crash Course NEET>Chapter 9 - Electrochemistry>Level 1>Q 3

The number of coulombs required for the deposition of

108 g

of silver is:

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Chemistry Crash Course NEET>Chapter 9 - Electrochemistry>Level 1>Q 4

1.08 g

of pure silver was converted into silver nitrate and its solution was taken in a beaker. It was electrolysed using a platinum cathode and a silver anode.

0.01

Faraday of electricity was passed using

0.15

volt above the decomposition potential of silver. The silver content of the beaker after the above shall be:

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Chemistry Crash Course NEET>Chapter 9 - Electrochemistry>Level 1>Q 5

A current of

2.0 A

passed for

5

hours through a molten metal salt deposits

22.2 g

of the metal(Atomic weight =

177

). The oxidation state of the metal in the metal salt is

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Chemistry Crash Course NEET>Chapter 9 - Electrochemistry>Level 1>Q 6

On passing a current of

1.0

ampere for

16 \min

and

5 \sec

through one litre solution of

{CuCl}_{2},

all copper of the solution was deposited at cathode. The strength of

{CuCl}_{2}

solution was (Molar mass of

Cu = 63.5,

Faraday constant

= 96500 C {mol}^{- 1})

:

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Chemistry Crash Course NEET>Chapter 9 - Electrochemistry>Level 1>Q 7

Which of the following expressions correctly represents the equivalent conductance at infinite dilution of

{Al}_{2} {({SO}_{4})}_{3} ?

Given that

{Λ^{°}}_{{Al}^{3 +}}

and

{Λ^{°}}_{{SO}_{4}^{2 -}}

are the equivalent conductances at infinite dilution of the respective ions?

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Chemistry Crash Course NEET>Chapter 9 - Electrochemistry>Level 1>Q 8

Conductivity

(

unit Siemen's

S)

is directly proportional to the area of the vessel and the concentration of the solution in it and is inversely proportional to the length of the vessel, then the unit of constant of proportionality is