## Textbook question 6B.11

Paige Lee 1A
Posts: 111
Joined: Sat Sep 07, 2019 12:16 am

### Textbook question 6B.11

Could someone please explain how to get the answers to parts a.ii and b?
I understand how to get part a.i

005391550
Posts: 88
Joined: Thu Jul 25, 2019 12:15 am

### Re: Textbook question 6B.11

In order to find the original solution's concentration of OH-, use the diluted concentration that you found in part ai) and find how many mols of OH- are really in the diluted solution. Then use this number of mols of OH- and divide it by 5.00mL to find the original concentration. This works because the number of moles in dilutions will not change.

005391550
Posts: 88
Joined: Thu Jul 25, 2019 12:15 am

### Re: Textbook question 6B.11

for part b, you want to use the concentration of the original solution (answer to part aii) which is the concentration of OH- of the original solution. Using this information, you can use the OH- concentration to find the mols of OH- in that 200mL solution. using the mols of OH-, you can convert it into mols of NaOH and then Na2O and then convert to grams

Return to “Calculating pH or pOH for Strong & Weak Acids & Bases”

### Who is online

Users browsing this forum: No registered users and 2 guests