please include the work for each oart , as im trying to practice to get a...

Question

Question

please include the work for each oart , as im trying to practice to get a better understanding

part 1

part 2

part 3

part 4

part 5

part 6

Answer 1

Answer #1

1) Buffer pH is calculated:

pH = - log Ka + log [Salt] / [Acid] = - log 5.88x10 ^ -6 + log (0.0055 / 0.0005) = 6.27

2) a) The HCl reacts with NaHCO3.

b) The concentration of the components.

c) NaOH reacts with H2CO3.

3) The concentration is calculated:

Ca = 2 * Cb * Vb / Va = 2 * 0.25 M * 13.5 mL / 9.30 mL = 0.73 M

4) The volume is calculated:

Vb = 0.75 M * 8.72 mL / 2 * 0.67 M = 5 mL

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Answer 2

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