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In: Chemistry

A) How many grams of solid sodium fluoride should be added to 2.00 L of a...

A) How many grams of solid sodium fluoride should be added to 2.00 L of a 0.190 M hydrofluoric acid solution to prepare a buffer with a pH of 2.425 ?

grams sodium fluoride = g.

B)   How many grams of solid sodium fluoride should be added to 1.00 L of a 0.299 M hydrofluoric acid solution to prepare a buffer with a pH of 3.825 ?

grams sodium fluoride = g.

C) How many grams of solid ammonium bromide should be added to 1.00 L of a 9.88×10-2 M ammonia solution to prepare a buffer with a pH of 10.080?  

grams ammonium bromide = g.

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