Lecture 193/3/06. QUIZ 1. True or False: Buffer solutions are always at pH 7. 2. For each pair, which will have a lower pH? 1. 0.1 M HNO 3 or0.1 M NH.

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Presentation transcript:

Lecture 193/3/06

QUIZ 1. True or False: Buffer solutions are always at pH For each pair, which will have a lower pH? M HNO 3 or0.1 M NH 4 NO M HNO 3 or 0.3 M HNO M HNO 3 or 0.1 M H 2 SO M HNO 3 or 0.1 M NaNO M HNO 3 or 0.1 M HNO M NaNO 3 or 0.1 M HNO M NaNO 3 or 0.1 M Al(NO 3 ) 3

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Sulfanilic acid, which is used in making dyes is made by reacting aniline with sulfuric acid. The acid has a pK a value of The sodium salt of the acid is quite soluble in water. If you dissolve 1.25 g of the salt in 125 mL of solution, what is the pH of the solution?