Physics, asked by Anonymous, 1 year ago

hello guys please answer the 2nd bit and 3rd bit

Attachments:

AKMass: 3 rd one answer is 2
Anonymous: how
AKMass: sorry i answered wrongly
AKMass: answer is 3

Answers

Answered by shriyakashyap12
2
2. b) reduction.
3. c) Mg+ CuSo4 -MgSo4 + Cu because Mg is more reactive than Cu
Answered by mummasdollmuski
2
hiii frnd....

hyyy lalitha.....here is your answer.....

2) option a) as Oxidation number of Cr changes from +6 in  K2Cr2O7 to +3 in Cr2 (SO4)3. So, this is an example of reduction...

3) option c) as mg is more reactive then zn so zn can not replace mg hence the chemical reaction will not take place......

Hope my answer helps you....

mummasdollmuski: thanks dear
AKMass: ok
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