MEDIUM
11th CBSE
IMPORTANT
Earn 100

Comment upon the statement, "Paradox of fractional oxidation numbers".

Important Questions on Redox Reactions

HARD
11th CBSE
IMPORTANT

Starting with the correctly balanced half-reactions, write the overall net ionic reaction for the following:
Chloride ion is oxidised to Cl2 by MnO4- ( in acid solution). Also, find out the change in the oxidation number of the underlined atom.

HARD
11th CBSE
IMPORTANT

Starting with the correctly balanced half-reactions, write the overall net ionic reaction for the following change:

Nitrous acid HNO2 reduces MnO4-( in acid solution). Also, find out the change in the oxidation number of the underlined atom.

MEDIUM
11th CBSE
IMPORTANT

Starting with the correctly balanced half-reactions, write the overall net ionic reaction in the following change:

Nitrous acid HNO2 Oxidises I- to I2 (in acid solution). Also, find out the change in the oxidation number of the underlined atom.

MEDIUM
11th CBSE
IMPORTANT

Starting with the correctly balanced half-reactions, write the overall net ionic reaction in the following change:
Chlorate ion ClO3- oxidises Mn2+to MnO2 (in acid solution). Also, find out the change in the oxidation number of the underlined atom.

HARD
11th CBSE
IMPORTANT

Starting with the correctly balanced half-reactions, write the overall net ionic reaction in the following change:

Chromite ion CrO3- is oxidised by H2O2 (in strongly basic medium). Also, find out the change in the oxidation number of the underlined atom.

EASY
11th CBSE
IMPORTANT
What is an electrochemical series? How can this be used to explain the oxidizing and reducing abilities of elements?
EASY
11th CBSE
IMPORTANT
Arrange the following metals in increasing order of reactivity. Which one will be the strongest reducing agent and which is the weakest? Mg, Na, Ag, Cu, Fe, Zn
HARD
11th CBSE
IMPORTANT
Draw a labelled diagram for the Daniel cell. Discuss its working.