View the step-by-step solution to:

# a 1 l buffer solution with ph 9.05 is desired. one of the two ingredients of the buffer is hcn. what could the other compound be?

a 1 l buffer solution with ph 9.05 is desired. one of the two ingredients of the buffer is hcn. what could the other compound be? Suggest a suitable ratio and determine the exact moles of the two compounds to achieve the desired pH

#### Top Answer

Dear student, please... View the full answer

. pH= pKa + log([A-]/[HA])
The other component may be KCN.
.. pKa for HCN = 9.2
… Required pH = 9.02
9.02 = 9.2 + log([A-]/[HA])
log([A-]/[HA]) = -0.15
([A-]/[HA] = 10^-0.15
([A-]/[HA] = 0.707...

### Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

### -

Educational Resources
• ### -

Study Documents

Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

Browse Documents
• ### -

Question & Answers

Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

Ask a Question
Ask a homework question - tutors are online