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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: Richeyyy on September 18, 2021, 05:13:30 PM

Title: A very basic question
Post by: Richeyyy on September 18, 2021, 05:13:30 PM

Hello, if my HCl bottle shows that it's 28-36% concentration, that kinda makes the calculations imprecise for how many grams of solution I need. What do you recommend? Should I just take the average 32% for my calculations?

Title: Re: A very basic question
Post by: VP_JQ on September 18, 2021, 07:08:47 PM

 Hi!

It never happened to me, but can't you determinate the exactly known concentration of the acid in your laboratory?

I'm not sure it's correct to take the average percentage...

Best regards

Title: Re: A very basic question
Post by: Richeyyy on September 19, 2021, 12:11:59 AM

Quote from: VP_JQ on September 18, 2021, 07:08:47 PM

Hi!

It never happened to me, but can't you determinate the exactly known concentration of the acid in your laboratory?

I'm not sure it's correct to take the average percentage...

Best regards

How do I determine the correct exact concentration? C=m/V? That wouldnt work for me because my HCl is store-bought, from a hardware store :/ what do you do in that case? Any other ideas?

Title: Re: A very basic question
Post by: Borek on September 19, 2021, 03:27:41 AM

Consult http://www.titrations.info - that's what chemists do to determine concentration in such cases.

Title: Re: A very basic question
Post by: VP_JQ on September 19, 2021, 11:39:38 AM

Quote from: Borek on September 19, 2021, 03:27:41 AM

Consult http://www.titrations.info - that's what chemists do to determine concentration in such cases.

Yes! I agree

Title: Re: A very basic question
Post by: Richeyyy on September 19, 2021, 01:34:03 PM

Thanks a bunch! :)