Question

Which element decreases its oxidation number in the following reaction? I2 +2KCl →2KI +

Cl2

iodine

chlorine

potassium

No element decreases its oxidation number.
@sweetburger
@zale101

Answer 1

b? or d?

Answer 2

@Zale101

Answer 3

I2 +2KCl →2KI +Cl2
What is the oxidation state in I2?
What is the Oxidation state of Cl in KCl?

What is the oxidation state in Cl2?
What is the Oxidation state of I in KI?

Answer 4

oxidation no. of I in I2 = 0
oxidation no. of K in KCl = +1
oxidation no. of Cl in KCl = -1
oxidation no. of I in KI = -1
oxidation no. of K in KI = +1
oxidation no. of Cl in Cl2 = 0

Answer 5

so iodine is the answer

Answer 6

By comparing Cl with I, which is reduced and which is oxidized?

Answer 7

the more negative the charge is the more electrons it has.

Answer 8

iodine decreases it oxidation

Answer 9

@Zale101

Answer 10

Iodine is being reduced and Cl is being oxidized