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Organic acids-GCSE chemistry

I have some homework which has organic acid reactions and I am very confused. I tried googling it but it wasn’t really helpful, if anything i was more confused…
Here are the questions
Calcium oxide+methanoic acid➡️________+_________

Potassium hydroxide+Ethanoic acid➡️ Potassium Ethanoate+__________

Calcium hydroxide+Propanoic acid➡️_______+_________

Lithium hydroxide+Butanoic acid➡️_________+_______

It also says I need to write the symbol equations.

Could someone please help me out. If you can please explain, I’m in year 9 so try not to make it too complicated. :smile:
(edited 1 year ago)
Original post by Moonlight:)
I have some homework which has organic acid reactions and I am very confused. I tried googling it but it wasn’t really helpful, if anything i was more confused…
Here are the questions
Calcium oxide+methanol acid➡️________+_________

Potassium hydroxide+Ethanoic acid➡️ Potassium Ethanoate+__________

Calcium hydroxide+Propanoic acid➡️_______+_________

Lithium hydroxide+Butanoic acid➡️_________+_______

It also says I need to write the symbol equations.

Could someone please help me out. If you can please explain, I’m in year 9 so try not to make it too complicated. :smile:

All of these reactions involve a base and an acid, don't they? What is the general reaction when a base reacts with an acid? Two products...

You should be able to write in the right answers now :smile:
(edited 1 year ago)
Original post by Reality Check
All of these reactions involve a metal, don't they? What is the general reaction when a metal reacts with an acid? Two products...

You should be able to write in the right answers now :smile:

Oh so it is salt plus water… so calcium methanide+water? Thanks :smile:
(edited 1 year ago)
Original post by Moonlight:)
Oh so it is salt plus water… so calcium methanide+water?

In GCSE chemistry, usually the suffix -ide is usually applied to simple anions that don’t contain oxygen.

When you have a salt of an organic acid, the prefix comes from the number of carbons in the chain and the suffix is -anoate. For example CH3COO^- is ethanoate (since ‘eth-‘ denotes two carbon atoms in the chain).

In light of this, can you refine your answer?
(edited 1 year ago)
Original post by TypicalNerd
In GCSE chemistry, usually the suffix -ide is usually applied to simple anions that don’t contain oxygen.

When you have a salt of an organic acid, the prefix comes from the number of carbons in the chain and the suffix is -oate. For example CH3COO^- is ethanoate (since ‘eth-‘ denotes two carbon atoms in the chain).

In light of this, can you refine your answer?

Ok so Calcium oxide+methanoic acid➡️calcium methanoate+water
Original post by Moonlight:)
Oh so it is salt plus water… so calcium methanide+water?

Indeed - though see the comment by @TypicalNerd regarding naming.

I also didn't read your equations properly and thought this was a question regarding metals plus acid, when in fact it's base + acid. You're correct :smile:
Original post by Moonlight:)
Ok so Calcium oxide+methanoic acid➡️calcium methanoate+water

Correct
Original post by Moonlight:)
Ok so Calcium oxide+methanoic acid➡️calcium methanoate+water


Bingo :smile: And if 'methanoate' is the anion from methanoic acid, what do you think the anion from ethanoic acid is...
Original post by Moonlight:)
I have some homework which has organic acid reactions and I am very confused. I tried googling it but it wasn’t really helpful, if anything i was more confused…
Here are the questions
Calcium oxide+methanoic acid➡️________+_________

Potassium hydroxide+Ethanoic acid➡️ Potassium Ethanoate+__________

Calcium hydroxide+Propanoic acid➡️_______+_________

Lithium hydroxide+Butanoic acid➡️_________+_______

It also says I need to write the symbol equations.

Could someone please help me out. If you can please explain, I’m in year 9 so try not to make it too complicated. :smile:

I can help you do the task
Original post by Reality Check
Bingo :smile: And if 'methanoate' is the anion from methanoic acid, what do you think the anion from ethanoic acid is...

Ethanoate :smile:
(edited 1 year ago)
Original post by Moonlight:)
Ethanoate :smile:


I think you've got the hang of this now :smile:
Original post by Reality Check
I think you've got the hang of this now :smile:


Yeah I think I should be able to do the rest now thanks for the help :smile:

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