Question

A) Calculate the volume of 2.51 M NaOH needed to make 200 mL of 0.04 M NaOH. & How many significant figures should you report your answer to?

B) Fill in the blanks with the lowest whole number ratio to balanced the equation:

___ HKC₈H₄O_4(aq) + ___ NaOH _(aq) → ___ NaKC₈H₄O_4(aq) + ___ H₂O _(l)

C) The pH of flat Sprite is usually 4.2. Calculate the H⁺ concentration in the beverage. (Answers should be put in scientific notation.)

____________ M H^{+ &} How many significant figures should you have in your answer?

D)

The pH of flat Sprite is usually 4.04. This gives a H⁺ concentration in the beverage of 9.12⋠10−59.12⋠10-5 M H⁺. Citric acid, the main component of Sprite is triprotic. Given this data, what is the concentration of citric acid in Sprite? ( Answers should be put in scientific notation.)

________M citric acid & How many significant figures should you have in your answer?

E) Consider the following acid: potassium hydrogen phthalate (HK₈H₄O₄₎ What type of acid is this?

F)