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You are asked to prepare a pH 8.60 buffer starting from 500 mL of 0.10 M solution of hydrocyanic acid, HCN, and excess sodium
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I rka- HCN Ix93-1 4.L6t 0.5 5.16 required NACN Anooni pta t LACH 9.334 &-6 5 0 -t0a) 50 19- mholes 50 - 019 X 50 1.5 49065 ma

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