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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: missUK11 on December 06, 2012, 02:42:31 AM

Title: how do you make 5% aqueous HCL ?
Post by: missUK11 on December 06, 2012, 02:42:31 AM

Hello,

How would i make up a solution of 5% aqueous HCL starting with 2M dilute HCL ??

thanks

Title: Re: how do you make 5% aqueous HCL ?
Post by: Borek on December 06, 2012, 04:08:41 AM

First step - you need both concentrations expressed using the same units. Either convert % to M or M to %. The former will end with easier calculations in the next step.

Title: Re: how do you make 5% aqueous HCL ?
Post by: AWK on December 06, 2012, 04:14:12 AM

You should know a density, at lest, one of the solution.

http://www.emdmillipore.com/chemicals/concentration-density-finder/c_YnSb.s1Og7sAAAEeEKtT_fpO

Title: Re: how do you make 5% aqueous HCL ?
Post by: missUK11 on December 06, 2012, 05:04:39 AM

how do you convert % to M?

Quote from: Borek on December 06, 2012, 04:08:41 AM

First step - you need both concentrations expressed using the same units. Either convert % to M or M to %. The former will end with easier calculations in the next step.

Title: Re: how do you make 5% aqueous HCL ?
Post by: Borek on December 06, 2012, 05:07:52 AM

http://www.chembuddy.com/?left=concentration&right=percentage-to-molarity