Problem The molecular scenes below represent equal volumes of four HA/A¯ buffers. (HA is blue and green, A¯ is green, and other ions and water are not shown.) 1 2 4 (a) Which buffer has the highest pH? (b) Which buffer has the greatest capacity? (c) Should we add a small amount of concentrated strong acid or strong base to convert sample 1 to sample 2 (assuming no volume change)?

5) What is the effective pH range of buffers formed with the following acids? Hint for b notice you are given a pK, not a pK.. a) Propanoic acid pK = 4.87 b) dimethylamine pK, = 3.23

Please solve fast!

Questions 11. Water in the Bow River contains a relatively high amount of dissolved limestone, CaCO3. This is an indication that the bedrock of the Bow River O has a high buffering capacity O has a low buffering capacity O accepts a large number of protons from the water O donates a large number of protons to the water

Hh.212. I need both parts.......

A buffer was prepared by titrating a 60.00 mL sample of 0.075 M sodium benzoate (NaC7H5O2) with 100.0 mL of 0.050 M HCl. What is the pH of the buffer? (e) 4.19 (f) 5.09 (g) 5.74 (h) 6.24

Find the pH during the titration of 20.00 mL of 0.1000 Mtri-ethylamine, (CH₃CH₂)₃N (K(b)=5.2X10⁻⁴), with 0.1000 M HCl solution after the following additions of titrant:(a) 0 mL(b) 10.00 mL(c) 15.00 mL(d) 19.00 mL(e) 19.95 mL(f ) 20.00 mL(g) 20.05 mL(h) 25.00 mL

Solve correctly please. (Gpt/Ai wrong answer not allowed)

An aqueous solution contains 0.399 M dimethylamine ((CH3)2NH).How many mL of 0.369 M hydrochloric acid would have to be added to 150 mL of this solution in order to prepare a buffer with a pH of 10.500? (answer is 110 mL)

How do I complete problem 2 in a step by step solution?