1. ## Diprotic Question

Can someone please explain why the answer is C, i'm not particularly sure how to exactly work it out.
I know it's not A or D, but why is it not B?

Question.png

2. ## Re: Diprotic Question

-log(0.05 x 2) =1
So it's C
(disclaimer: I just started studying for acidic (legit behind) so I'm not sure if I'm doing it right )

Sent from my D6503 using Tapatalk

3. ## Re: Diprotic Question

Originally Posted by DatAtarLyfe
Can someone please explain why the answer is C, i'm not particularly sure how to exactly work it out.
I know it's not A or D, but why is it not B?

Question.png
For option B), since its pH is 1.0 (implying a H+ concentration of 0.1 mol/L), and concentration is 0.1 mol/L, it follows that each mole of the acid contains 1 mole of H+, so it is monoprotic. For C), the concentration is 0.05 mol/L, but the H+ concentration is 0.1 mol/L (as the pH is 1.0), so there must be 2 moles of H+ per mole of acid, i.e. it is diprotic.

4. ## Re: Diprotic Question

Thanks
edit: i was meant to say i know its not B or D since they are monoprotic.
Cool.

There are currently 1 users browsing this thread. (0 members and 1 guests)

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•