Help please :) (1 Viewer)

[Keira Jones]

Thanks.

Sorry about the poor quality

Here's the whole Q. of the second attachment:

 

[Riproot]

The first one is because combustion of sulphur causes SO2 to form, so electricity would not cause the below reactions to occur.

S + 2O --> SO2 (all gas)

H2O(l) + SO2(g) (reversible) H2SO4(aq)

 

[Riproot]

The second one we need the info above. (why you cut it off the is beyond me. Did you read the question?)

 

[Keira Jones]

The second one we need the info above. (why you cut it off the is beyond me. Did you read the question?)

Sorry I really stressed out =( I'll take a photo of it now

 

[Riproot]

NaHCO3 is a basic salt.

NaHCO3(aq) (reversible) Na+ + HCO3-

HCO3- (reversible) H+ + CO3(2-)

This is unexplained by Arrhenius' definition because we know CO3(2-) acts as a base, but it does not emit an OH- when it reacts, which is what the Arrhenius definition defines as an acid.

The Brönsted-Lowry definition does explain this because CO3(2-) is a proton acceptor, which is what the Brönsted-Lowry definition defines as a base.

 

[Keira Jones]

I attached the whole Q. thank for you help!!!