Which statement best describes the use of a chemical indicator in a titration? It must be measured to the nearest 0.01 mL.
It must be colored in the acid solution.
It must measure pH directly at all pH values.
It must change color near the equivalence point.

Which of these describes the rate of this chemical reaction? h2 + cl2 → 2 hcl a. an increase in the concentration of hcl and h2 with time b. an increase in the concentration of hcl with time c. an increase in h2 and cl2 with time d. a decrease in hcl and cl2 with time