Question

Buffer question

Answer 1

i got part a. but don't know how to start for part b. anyone can guide me??

Answer 2

Do you know the equation to caluclate the pH for a weak acid?

Answer 3

ok sorry my bad, whats your answer for part a)

Answer 4

did u get 3.85?

Answer 5

@chmvijay ?

Answer 6

Looks like part b you would use a henderson-hasselbalch equation?

Answer 7

So I'm thinking we'll be using the pOH version of the Henderson Hasselbalch, pH = 7 is the same as pOH = 7. Then we have pKb already

Answer 8

yeah what about the conc of acid and salt

Answer 9

We're adding HCl to our base of Lidocaine
We have a concentration of HCl, which is 0.5M

Answer 10

what about the salt then?

Answer 11

can you write the equation?

Answer 12

SInce we already have the LIdocaine, then we'd need to find out how much HCl we'll need...