19. What is the pH of a 1.0 L buffer made with 3.00 mol NH, and 2.50 mol NH after 0.325 mol NaOH was added? (K of NH, = 1.66 x 10)

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A: Litmus paper is used to indicate acidity or alkalinity of solution.

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.