What mass of solid lioh must be added to hydrofluoric acid

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what mass of solid LiOH must be added to 1.0 L of 1.35 M hydrofluoric acid solution in order to create a buffer solution with pH = 2.90? (Hint: What ratio of [HF] to [F-] is neede?) For hydrofluoric acid Ka= 6.8 * 10^-4

Reference no: EM13171118

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