username1214455
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#1
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#1
Calculate the concentration of Nitric Acid if 25cm3 of Nitric Acid is neutralised by 15cm3 of 0.2 mol dm-3 ammonium hydroxide?

Help asap please
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alow
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#2
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What have you done so far?
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username1214455
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#3
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(Original post by alow)
What have you done so far?
symbol equation literally have no idea how to do anything more
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interstitial
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#4
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1 write down symbol equation
2 find ratio of reactants
3 find out how many moles of ammonium hydroxide you have using n=cV (remember to convert to dm^3!!!)
4 use ratio to find how many moles of acid you have
5 use c = n/V to find concentration of acid

hope this helps
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username1214455
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#5
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(Original post by Arithmeticae)
1 write down symbol equation
2 find ratio of reactants
3 find out how many moles of ammonium hydroxide you have
4 use ratio to find how many moles of acid you have
5 use c = n/V to find concentration

hope this helps
how do I actually do steps 3 -5?
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L'Evil Fish
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#6
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(Original post by Obiejess)
how do I actually do steps 3 -5?
Moles = conc x volume (in dm^3)

= (0.2)(15/1000)

Then you use ratio to find Moles of nitric acid

So you know Moles and volume of nitric acid, can find conc using above formula
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indigobluesss
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#7
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(Original post by Obiejess)
how do I actually do steps 3 -5?
3- How do you calculate the number of moles of an aqueous solution?? Surely you'd know this given this is an A2 question.
4- This will be easier once you know 3
5- Just rearrange the moles equation to find the concentration
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username1214455
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#8
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(Original post by L'Evil Fish)
Moles = conc x volume (in dm^3)

= (0.2)(15/1000)

Then you use ratio to find Moles of nitric acid

So you know Moles and volume of nitric acid, can find conc using above formula
Thanks
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username1214455
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#9
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(Original post by R Dragon)
3- How do you calculate the number of moles of an aqueous solution?? Surely you'd know this given this is an A2 question.
4- This will be easier once you know 3
5- Just rearrange the moles equation to find the concentration
Actually doing this in GCSE Further Additional Science
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indigobluesss
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(Original post by Obiejess)
Actually doing this in GCSE Further Additional Science
No way LOOOOOOL, this is what they do in GCSEs now? That's crazy, I don't even do this in uni
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L'Evil Fish
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#11
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(Original post by R Dragon)
No way LOOOOOOL, this is what they do in GCSEs now? That's crazy, I don't even do this in uni
Lol are you serious? This is like the end of GCSE/beginning of AS
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indigobluesss
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(Original post by L'Evil Fish)
Lol are you serious? This is like the end of GCSE/beginning of AS
I didn't do it in GCSEs, nor in AS levels. Only in A2, and now that I'm studying dentistry, I've never encountered it in my pre-clinical biochemistry classes :/

But I think it's a good thing to expose it to people at a young age, because I remember how much I struggled with it o.o
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L'Evil Fish
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#13
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(Original post by R Dragon)
I didn't do it in GCSEs, nor in AS levels. Only in A2, and now that I'm studying dentistry, I've never encountered it in my pre-clinical biochemistry classes :/

But I think it's a good thing to expose it to people at a young age, because I remember how much I struggled with it o.o
That's strange...
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indigobluesss
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#14
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(Original post by L'Evil Fish)
That's strange...
I concur
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