question archive A) Which of the following pairs cannot be mixed together to form a buffer solution? Why? A
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A) Which of the following pairs cannot be mixed together to form a buffer solution? Why?
A. NH3, NH4Cl
B. KOH, HF
C. NaC2H3O2, HCl
D. H3PO4, KH2PO4
E. RbOH, HCl
I already know the answer is E. I want help understanding when we can rule out choices B and C.
B) For a solution equimolar in HCN and NaCN, which statement is false?
Without giving all the choices, the false choice is "The [H+] is larger than it would be if only the HCN was in solution."
Why? How would I know this?
C) A buffer containing 0.200 M of acid, HA, and 0.150 M of its conjugate, A-, has a pH of 3.35. What is the pH after 0.015 mol of NaOH is added to 0.500 L of the solution.
How do I solve this?
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