because the hydroxide thing had 2 molecules in the equation thus you needed to multiply the moles from the sulfuric acid by 2 and then carry on.

BUT the oxygen % plus oxygen gas anode equation were the only things i did not fully know. i practiced every single question on the exam yesterday with the mark schemes except these 2

Reply 90

Serena#J

4

Original post by itayrofe

i got 2.64 times 10 to the power of 7

I think I got 5.28 x 10^7?

Reply 91

Serena#J

4

Original post by itayrofe

because the hydroxide thing had 2 molecules in the equation thus you needed to multiply the moles from the sulfuric acid by 2 and then carry on.

BUT the oxygen % plus oxygen gas anode equation were the only things i did not fully know. i practiced every single question on the exam yesterday with the mark schemes except these 2

Wait I’m so confused - we were finding the volume of what again?

Reply 92

Serena#J

4

Original post by itayrofe

because the hydroxide thing had 2 molecules in the equation thus you needed to multiply the moles from the sulfuric acid by 2 and then carry on.

BUT the oxygen % plus oxygen gas anode equation were the only things i did not fully know. i practiced every single question on the exam yesterday with the mark schemes except these 2

Do you mean 2 moles? Of hydroxide?

Reply 93

Serena#J

4

Original post by itayrofe

because the hydroxide thing had 2 molecules in the equation thus you needed to multiply the moles from the sulfuric acid by 2 and then carry on.

BUT the oxygen % plus oxygen gas anode equation were the only things i did not fully know. i practiced every single question on the exam yesterday with the mark schemes except these 2

Do you remember what the 6.6 tonnes was of?

Reply 94

Serena#J

4

Original post by itayrofe

because the hydroxide thing had 2 molecules in the equation thus you needed to multiply the moles from the sulfuric acid by 2 and then carry on.

BUT the oxygen % plus oxygen gas anode equation were the only things i did not fully know. i practiced every single question on the exam yesterday with the mark schemes except these 2

Ohhhh wait I get it now I’m so dumb 😭
but I’ll only lose 1 mark ig and that was the only thing I got confused on 😂

Reply 95

itayrofe

11

no, but one reactant was 2 molecules and the one given was 1 molecule thus you needed to multiply the moles by 2

Reply 96

Serena#J

4

Original post by itayrofe

no, but one reactant was 2 molecules and the one given was 1 molecule thus you needed to multiply the moles by 2

What did you get for the one about the question on the proton acceptor thingy?

(edited 10 months ago)

Reply 97

itayrofe

11

Original post by Serena#J

What did you get for the one about the question on the proton acceptor thingy?

oh yea, you needed to state that hydroxide needs to gain 1 electron (1 electron = 1 hydrogen = 1 proton) thus hydroxide reacts with hydrogen to gain 1 electron to reach its full outer shell + hydroxide is reduced/oxidising agent.

Reply 98

Serena#J

4

Original post by itayrofe

oh yea, you needed to state that hydroxide needs to gain 1 electron (1 electron = 1 hydrogen = 1 proton) thus hydroxide reacts with hydrogen to gain 1 electron to reach its full outer shell + hydroxide is reduced/oxidising agent.