Which weak acid-conjugate base combination would be the best to create a solution with a pH of 4.193?
a) Butanoic acid and Potassium butanoate (Ka = 1.5 x 10-5)
b) Benzoic acid and Sodium benzoate (Ka = 6.3 x 10-5)
c) Acetic acid and Lithium acetate (Ka = 1.8 x 10-5)
d) Ammonium chloride and Ammonia (Kb = 1.8 x 10-5)
e) Hypochlorous acid and sodium hypochlorite (Ka = 2.9 x 10-8)
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Buffer concept. You can view video lessons to learn Buffer. Or if you need more Buffer practice, you can also practice Buffer practice problems.
What is the difficulty of this problem?
Our tutors rated the difficulty ofWhich weak acid-conjugate base combination would be the best...as medium difficulty.
How long does this problem take to solve?
Our expert Chemistry tutor, Jules took 3 minutes and 17 seconds to solve this problem. You can follow their steps in the video explanation above.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Harris & Mirkin's class at NU.