Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-1>Q 60

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The oxidation number of $Fe$ in ${FeS}_{2}$ is _______.

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Important Questions on Redox Reactions

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-1>Q 61

Determine the

[H^{+}]

at half-equivalence point and

pH

at equivalence point during the titration of a

50 mL

,

0.1 M {NH}_{4} Cl

solution with

0.1 M NaOH

solution at

25 ° C

. Given

: K_{b}

of

{NH}_{3} = 2 \times 10^{- 5}

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-1>Q 62

In which of the following compounds does hydrogen have an oxidation state of

- 1 ?

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-1>Q 63

Hydrogen acts as an oxidising agent in the reaction with:

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-1>Q 64

When

H_{2} O_{2}

is oxidised by a suitable oxidant, one of the products is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-1>Q 70

A certain metal salt solutions is electrolysed in series with a silver coulometer. The weights of silver and the metal deposited are 0.5094 g and 0.2653 g. Calculate the valency of the metal if its atomic weight is nearly that of silver.

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-1>Q 74

For

{Zn}^{2 +} / Zn, E ° = - 0.76 V

, for

{Ag}^{+} / Ag, E ° = 0.799 V

. The correct statement is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-1>Q 75

If

0.224 L

of

H_{2}

gas is formed at the cathode, the volume of

O_{2}

gas formed at the anode under identical conditions, is

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-1>Q 76

Determine the equivalent weight of the following ions;

(a) ${Na}^{+} (b) {Al}^{3 +} (c) {NO}^{+} (d) {Cl}^{-}$

(e) ${CO}_{3}^{2 -} (f) {SO}_{4}^{2 -} (g) {PO}_{4}^{3 -}$