HW 6B.11 7th Ed

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Layal Suboh 1I
Posts: 61
Joined: Fri Sep 28, 2018 12:23 am

HW 6B.11 7th Ed

Postby Layal Suboh 1I » Tue Jan 15, 2019 8:02 pm

Hello,

I'm having difficulty with this problem It says:

A student added solid Na2O to a volumetric flaks of volume 200.0 mL, which was then filled with water, resulting in 200.0 mL of NaOH solution. Then 5.00 mL of the solution was transferred to another volumetric flask and diluted to 500.0 mL. The pH of the diluted solution is 13.25. (a) What is the molar concentration of hydroxide ions in (i) the diluted solution, (ii) the original solution? (b) What mass of Na2O was added to the first flask?

I was able to do (a) (i), but I don't know how to find the molar concentration of OH and the mass of Na2O.

Thanks!

Anjali_Kumar1F
Posts: 62
Joined: Fri Sep 28, 2018 12:25 am

Re: HW 6B.11 7th Ed

Postby Anjali_Kumar1F » Tue Jan 15, 2019 9:10 pm

Can someone help me with 11.41 from 6th edition


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