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How many grams of solid sodium fluoride should be added to 0.500 L of a 9.3710 -2 M hydrofluoric acid solution to prepare a buffer

How many grams of solid sodium fluoride should be added to 0.500 L of a 9.37×10-2 M hydrofluoric acid solution to prepare a buffer with a pH of 3.658 ?

grams sodium fluoride =  g.
please help sos

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Given pH of the buffer solution 3658 volume of the solution V 0500 L concentration of HF HF 937 102 ... blur-text-image

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