Home
Class 12
CHEMISTRY
Which substance is serving as a reducing...

Which substance is serving as a reducing agent in the following reaction ?
`Cr_(2) O_(7)^(2-) + 14H^(+) + 3Ni rarr 2Cr^(3+) + 7H_(2)O + 3Ni^(2+)`

A

`H_(2)O`

B

Ni

C

`H^(+)`

D

`Cr_(2)O_(7)^(2-)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

In the following reaction Cr_(2) O_(7)^(2-) + 14H^(+) + 6I^(-) rarr 2Cr^(3+) + 7H_(2)O + 3I_(2) Which element gets reduced ?

Identify oxidizing agent in the following reactions: 3Fe+4H_(2)OrarrFe_(3)O_(4)+4H_(2)

Identify oxidizing agent in the following reactions: Fe_(2)O_(3)+3COrarr2Fe+3CO_(2)

Identify the substance oxidised, reduced, oxidising agent and reducing agent for each of the following reactions : HCHO(l) + 2Cu^(2+) (aq) + 5OH^- (aq) rarr Cu_2O(s) + HCOO^- (aq) + 3H_2O(l)

Identify reductants and oxidants in the following reactions. 2PbO + C rarr 2Pb + CO_2 4NH_3 + 5O_2 rarr 4NO +6H_2O

Assign oxidation number to each element in the following compounds or ions. K_2Cr_2 O_7

What is the change in oxidation number of chlorine in the following reaction? 2H_2O_2 +ClO_4^(-)rarr2O_2+ClO_2^(-)+2H_2O

Balance the following redox reactions by ion- electron method: Cr_2O_7^(2-) (aq) + SO_2 (g) rarr Cr^(3+) (aq) + SO_4^(2-) (aq) (in acidic solution)

Find the oxidation numbers of the underlined species in the following compounds or ions. Cr _2O_7^(2-) .