# A-Level Chemistry Question

Can someone help me out? I'm sure it's straightforward I just can't figure it out:

In the production of 5g of bromine, what volume of chlorine is required at RTP? Give your answer to 2 s.f. and in dm3. The volume of one mole of gas at room temperature and pressume is 24dm3.

Thanks!!
Original post by mai0may
Can someone help me out? I'm sure it's straightforward I just can't figure it out:
In the production of 5g of bromine, what volume of chlorine is required at RTP? Give your answer to 2 s.f. and in dm3. The volume of one mole of gas at room temperature and pressume is 24dm3.
Thanks!!

BTW I have the answer, which is 0.75dm3, I just can't figure out how to get to it
Original post by mai0may
BTW I have the answer, which is 0.75dm3, I just can't figure out how to get to it

Are you sure this is A level? Because they've given far too many details for this to be A level.

work out moles of Br2, which is 5/160. The moles of chorine will have to be the same as bromine.

I think this is more GCSE than A level.
Original post by vnayak
Are you sure this is A level? Because they've given far too many details for this to be A level.
work out moles of Br2, which is 5/160. The moles of chorine will have to be the same as bromine.
I think this is more GCSE than A level.

Oh!! Thank you, I was just using 80 as the Mr not 160 lol

It’s a question from the A-Level OCR B Salters textbook 🙂 thanks again!
Original post by mai0may
Oh!! Thank you, I was just using 80 as the Mr not 160 lol
It’s a question from the A-Level OCR B Salters textbook 🙂 thanks again!

Makes me wish I was doing OCR icl....I'm AQA.

yeah, bromine is diatomic.

To remember diatomic elements, remember this:

Have - Hydrogen
No - Nitrogen
Fear - Fluorine
Of - Oxygen
Ice - Iodine
Cold - Chlorine
Beer - Bromine.