NEET
- Exam
- NEET
- Subject
- Chemistry
- Chapter
- Redox Reactions
NEET · Chemistry · Redox Reactions
Identify the correct statement (s) in relation to the following...
Identify the correct statement (s) in relation to the following reaction,
(\mathrm{Zn}+2 \mathrm{HCl} \rightarrow 2 \mathrm{nCl}_2+\mathrm{H}_2)
(a) Zini ciscing as an oxidant
(b) Chlorine is acting as a reductant
(c) Hydrogen ion is sading as a noxidant
(d) Zinc is acting sa refeultalt
Options
- AA, B - are correct and C, D - are incorrect
- BA, B - are incorrect and C, D - are Correct
- COnly A is correct
- DOnly A, D are correct
Correct answer
B. A, B - are incorrect and C, D - are Correct
Step-by-step solution
Writing the oxidation number of each element above its symbol, so that
(\stackrel{0}{\mathrm{Zn}}+2 \stackrel{+1-1}{\mathrm{HCl}} \longrightarrow \stackrel{+2-1}{\mathrm{Zn} \mathrm{CH}_2}+\stackrel{0}{+\mathrm{H}_2})
(a) The oxidation number of Zn increases from 0 in Zn to +2 in ZnCl 2, therefore, Zn acts as a reductant. Thus, option (a) is incorrect.
(b) The oxidation number of chlorine does not change, therefore, it neither acts as a reductant nor an oxidant. Therefore, option (b) is incorrect.
(c) The oxidation number of hydrogen decreases from +1 in (\mathrm{H}^{+})to 0 in (\mathrm{H}_2), therefore, (\mathrm{H}^{+}) acts as an oxidant. Thus, option (c) is correct.
(d) As explained in option (a), Zn acts as reductant, therefore, it cannot act as an oxidant. Thus, option (d) is correct.