Burette: Burette: 1.00 M HNO3 0.0 mL 1.00 M HNO3 1.00 M HNO, is a strong acid. Flask: Mystery NaOH Mystery NaOH is a strong base. Flask: The initial pH of the solution is 12.9. 100 mL of NaOH (Unknown concentration) Indicator: Bromthymol blue Bromthymol blue is yellow when pH is below 6.0 and blue when pH is above 7.6. Indicator: Bromthymol blue Balanced chemical equation: HNO, + NaOH - NaNO, + H,0 Reset pH at equivalence point: 7.0

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