Question

PLEASE HELP FAST
Which equation is an example of a redox reaction?

Answer 1

Answer is A

Step-by-step explanation:

so Redox reaction is when one element is getting reduced and other oxidized

if u getting confused what is Reduction and what is oxidation remember it as

OIL RIG ;- oxidation is losing of electron ..... reduction is gaining of electron

now,

K is in free state so oxidation no is 0 and oxidation no of Ca is +2..... After the reaction K is Oxidized and Ca is Reduced