Titrations

A toilet cleaner containing sodium hydrogen sulphate, NaHSO4 is believed to have been contaminated. 5.678 g of the sample were dissolved in water and the solution was made up to 250 cm3. This solution was placed in a burette and 23.1 cm3 of it were required to neutralize 25 cm3 of 0.1 mol / dm3 sodium hydroxide. Calculate the percentage purity of the sample given that the species react in a 1:1 ratio.

Reply 1

Bookworm524

So this is a back titration.
Calculate mole of NaOH first
Then you find the mole present in the original solution (because it's diluted)
Find the gram of the NaHSO4 with formula

Then you should know what to do to get %
Hope that helps

(edited 7 months ago)

Reply 2

5hyl33n

Volunteer Team, Clearing and Applications Advisor

Original post by Bookworm524

Hi @Bookworm524,

Thank you for posting!

However, please be aware that generally we do not provide full solutions or complete hints. This is because we want to encourage learning and problem-solving rather than simply providing answers.

May I politely request that you edit your post and ask OP to complete one step at a time so we know they understand your method?

We appreciate your cooperation and look forward to seeing you continue to contribute to TSR.

5hyl33n

(edited 7 months ago)

Reply 3

5hyl33n

Volunteer Team, Clearing and Applications Advisor