AdministratorJune 26, 2021 at 7:17 am1023 Replies202950 XPContributions: EnterMedSchool Donor Team Manager VolunteerReputation: Level 7
Hot, concentrated aqueous sodium hydroxide and chlorine react as shown in the equation:
6NaOH + 3Cl2 → 5NaCl + NaClO3 + 3H2O
Which of the following statements is/are correct?
1 Chlorine has oxidation state +5 in NaClO3.
2 This is an example of a disproportionation reaction.
3 Some of the oxygen in the hydroxide ions is oxidised.
A. none of them
B. 1 only
C. 2 only
D. 3 only
E. 1 and 2 only
F. 1 and 3 only
G. 2 and 3 only
H. 1, 2 and 3
MemberJuly 21, 2021 at 6:13 pm331 Replies137970 XPContributions: Team Manager EnterMedSchool Donor VolunteerReputation: Level 6
1. This is correct just by counting.
2. We just have to figure out if there is a species that gets both reduced and oxidised in the reaction. This species is Chloride. This is correct.
3. This is also false. Again, by counting the oxygen oxidation numbers you can figure it out.
The answer is E.
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