Use the following information to answer the next three questions.

A student titrates a 20.0mL sample of a solution of sodium hydroxide with

0.20mol/L nitric acid and graphs the titration results.

Row

A.

B.

PH|7|

pH

C.

D.

10

20

25

Volume of titrant (mL)

31. The titrant in the above titration is

i

NaOH(aq)

NaOH(aq)

HNO3(aq)

HNO3(aq)

30

i

40

and it is found in the

ii

Erlenmeyer flask

Burette

Erlenmeyer flask

Burette

ii