All In One ISC Chemistry Class 12>Chapter 3 - Electrochemistry>Chapter Practice>Q 6

HARD

12th ICSE

IMPORTANT

Earn 100

What does the negative sign in the expression ${E^{°}}_{{Zn}^{2 +} Zn} = - 0.76 V$ mean?

Important Questions on Electrochemistry

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IMPORTANT

All In One ISC Chemistry Class 12>Chapter 3 - Electrochemistry>Chapter Practice>Q 7

List the factors on which molar conductivity of ionic solution depends.

MEDIUM

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All In One ISC Chemistry Class 12>Chapter 3 - Electrochemistry>Chapter Practice>Q 8

List the factors on which conductivity of electrolyte depends.

HARD

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IMPORTANT

All In One ISC Chemistry Class 12>Chapter 3 - Electrochemistry>Chapter Practice>Q 9

The specific conductivity of a saturated solution of silver chloride is

2.30 x 10^{- 6} S {cm}^{- 1}

at

25^{°} C

. Calculate the solubility of silver chloride at

25^{°} C

.

{Λ^{°}}_{m}

for

{Ag}^{+}

and

{Cl}^{-}

ions

61.9 S {cm}^{2} {mol}^{- 1}

and

76.3 S {cm}^{2} {mol}^{- 1}

respectively.

MEDIUM

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All In One ISC Chemistry Class 12>Chapter 3 - Electrochemistry>Chapter Practice>Q 10

From the values of a Faraday constant

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

and Avogadro number

(6.023 x 10^{23})

, calculate the coulomb charge on an electron.

MEDIUM

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All In One ISC Chemistry Class 12>Chapter 3 - Electrochemistry>Chapter Practice>Q 11

How will the pH of brine (aq

NaCl

solution) be affected when it is electrolysed?

EASY

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All In One ISC Chemistry Class 12>Chapter 3 - Electrochemistry>Chapter Practice>Q 12

What is a primary cell? Give one example.

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All In One ISC Chemistry Class 12>Chapter 3 - Electrochemistry>Chapter Practice>Q 13

What features of a cell enables practical use of battery?

EASY

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IMPORTANT

All In One ISC Chemistry Class 12>Chapter 3 - Electrochemistry>Chapter Practice>Q 14

Mention the uses of mercury cell.