Question

Which of the following decomposition reactions is/are correct?
A) 2NaOH 2Na + O2 + H2
B) 2NaOH 2Na + H2O + 1/2O2
C) 2NaOH Na2O + H2O
D) 2NaOH 2Na + H2O2

Both reactions A & B are correct.
Only reaction A is correct.
Only reaction D is correct.
Only reaction C is correct.

Answer 1

The generalized reaction for chemical decomposition is:
AB → A + B

Answer 2

can i get a straight answer please

Answer 3

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Like @summerforever21 said: the general reaction for a decomposition is AB → A + B
When sodium hydroxide decomposes, it's usually in Na+ and OH- ions.
This is not the case in any of the answers so i think this is a thermal decomposition.
I think when a hydroxide undergoes thermal decomposition, the hydroxide will split in the oxide and water. In this case that will be sodium oxide and water.

Answer 4

^ I agree thank you

Answer 5

thankyou very much :)!!!

Answer 6

no problem