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Topic: Acids and bases  (Read 1923 times)

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Offline Diva

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Acids and bases
« on: May 22, 2017, 08:23:54 PM »
Calculate the concentration of the hydrochloride acid if a 15mL sample (diluted by factor of 10) is titrated with standard sodium carbonate solution. The titration required 10mL of 0.250 mol per L sodium carbonate to neutralize the acid?

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Offline Arkcon

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Re: Acids and bases
« Reply #1 on: May 22, 2017, 09:22:37 PM »
Greetings, Diva:, I can see that you're new, and I'd like to welcome you to the Chemical Forums.  I'd like to remind you to read our Forum Rules{click}.  You agreed to these rules as a condition of signing up for our forum, and they apply to you, whether you agree with them or not, or even if you're unaware of them.

You're going to need a balanced chemical reaction.  So go ahead and write it for us.  You're going to have to write down that dilution step, so you don't forget it -- after dilution, how much is actually there?  How much sodium carbonate is there in that volume of that concentration sodium carbonate?

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Offline Diva

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Re: Acids and bases
« Reply #2 on: May 22, 2017, 11:48:59 PM »
2HCL + Na2CO3 --> 2NaCl + CO2 + H2O
 Ratio 2:1

Offline Borek

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Re: Acids and bases
« Reply #3 on: May 23, 2017, 03:15:09 AM »
How many moles of carbonate?
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