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# Equilibrium question watch

1. Is it:

volume x density = mass
moles = mass/mr ?
2. Bump
3. You will find n(NaOH), some of that reacted with the HCl, the rest with the Pr-1-OH.
4. (Original post by Pigster)
You will find n(NaOH), some of that reacted with the HCl, the rest with the Pr-1-OH.
? doesnt NaOH react with the hcl, propan-1-ol AND propanoic acid?

Im cant remember why but id written down:

volume x density = mass
moles = mass/mr
5. (Original post by kiiten)
? doesnt NaOH react with the hcl, propan-1-ol AND propanoic acid?
Whooops, typo. It doesn't react with the alcohol, it will react with the HCl and th PrOOH.

Since you're given volumes, you need to convert volume into mass to allow you to then convert into amounts.
6. (Original post by kiiten)

Is it:

volume x density = mass
moles = mass/mr ?
Yes.
7. (Original post by Pigster)
Whooops, typo. It doesn't react with the alcohol, it will react with the HCl and th PrOOH.

Since you're given volumes, you need to convert volume into mass to allow you to then convert into amounts.
How do you know only hcl and propanoic acid reacts?
8. (Original post by kiiten)
How do you know only hcl and propanoic acid reacts?
Sodium hydroxide is a base and reacts with acids.

9. (Original post by charco)
Sodium hydroxide is a base and reacts with acids.

Ah yeah of course so:

volume of original method - volume of reacted mixture = volume of propanol?

Then find mass (density x volume) and moles (mass/ mr)
10. (Original post by kiiten)
Ah yeah of course so:

volume of original method - volume of reacted mixture = volume of propanol?

Then find mass (density x volume) and moles (mass/ mr)
Actually they just want the moles of propanol from the start. So before you added it to the flaks. It's simply propanol volume × density to find the mass of propanol. Then mass/Mr.
PS Fellow army here 👋
11. (Original post by Selgomez11)
Actually they just want the moles of propanol from the start. So before you added it to the flaks. It's simply propanol volume × density to find the mass of propanol. Then mass/Mr.
PS Fellow army here 👋
Hey

Ughh so they included the other info for no reason?
12. (Original post by kiiten)
Hey

Ughh so they included the other info for no reason?

You are probably going to use the other data later on in the question.
13. (Original post by charco)

You are probably going to use the other data later on in the question.
Later on as in the questions after this e.g. part i)

For this question is it just mass = volume x density then mass/mr ?

Posted from TSR Mobile
14. (Original post by kiiten)
Later on as in the questions after this e.g. part i)

For this question is it just mass = volume x density then mass/mr ?

Posted from TSR Mobile
yes

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Updated: January 23, 2017
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