So I am going to start off with a relatively easy question
1. If you have 30 mL of 0.2 M NaOH, how many liters of 0.3 M HNO3 is required to turn the phenol red indicator in the solution red.
Strong Acid + Strong Base » Neutral solution + H2O
HNO3 (aq) + NaOH (aq) » NaNO3 (aq) + H2O (l)
Molar ratios are all 1 so we can proceed with M1V1 = M2 V2
(0.2 M) (0.03 L) = (0.3) (V2)
0.02 L = V2
20 mL are required to turn the phenol red indicator into the solution red.