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Titration help

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Could anybody give me some advice on whether this is right or not? Many thanks
Original post by Whale57
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Could anybody give me some advice on whether this is right or not? Many thanks


No, it's not ...

... it should be written from top to bottom.
Reply 2
Original post by charco
No, it's not ...

... it should be written from top to bottom.


Hi,
Thanks for your reply, I'm laying it out how the teacher has asked us to and going through the steps taught, it is just the ratio part I am struggling with as i have not been taught that part yet
Reply 3
The Q states that the H3PO4 is 1 mol dm-3, for some reason, your calc. suggests that the NaOH is 1 mol dm-3.

Step 1, calc. n(H3PO4)
Step 2, apply mole ratio to work out n(NaOH) using 3:1
Step 3, calc. conc.(NaOH)

Have another go and someone will tell you if you're right or not.
Reply 4
Thanks for the response,

I've tried again and I've got 0.26 moldm cubed as the answer

Could anyone confirm that is correct?
Reply 5
Can anyone help as this work is due tomorrow and I really want to get it right

Thanks
Reply 6
Original post by Whale57
Thanks for the response,

I've tried again and I've got 0.26 moldm cubed as the answer

Could anyone confirm that is correct?


It isn't correct.

Can you explain how you got to that answer?

Posted from TSR Mobile
Reply 7
Original post by HAnwar
It isn't correct.

Can you explain how you got to that answer?

Posted from TSR Mobile


I've managed to do it now I think thank you for the help!

I've attempted a different question on titration and I think I've got it right as I understand it a bit better now, could someone check it for me to see if it's correct then I'll know I'm on the right track! Many thanks :smile:

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Reply 8
Original post by Whale57
I've managed to do it now I think thank you for the help!

I've attempted a different question on titration and I think I've got it right as I understand it a bit better now, could someone check it for me to see if it's correct then I'll know I'm on the right track! Many thanks :smile:

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Yep your answer's right.

What did you get for the other one?

Posted from TSR Mobile
Original post by Whale57
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Could anybody give me some advice on whether this is right or not? Many thanks
Work out the moles of phosphoric acid, times by 3 is the moles of NaOH. Use that to calculate the concentration of NaOH. You've done everythign right, you've just done the wrong thing.

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