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A chemistry graduate student is given 500 mL of a 1.50 M hydrocyanic acid (HCN) solution. Hydrocyanic acid is a weak acid with Ka = 4.9 x 10^(-10). What mass of NaCN should the student dissolve in the HCN solution to turn it into a buffer with pH = 9.42? You may assume that the volume of the solution doesn't change when the NaCN is dissolved in it. Round the volume to 2 significant digits. Be sure your answer has a unit.
A chemistry graduate student is given 500 mL of a 1.50 M hydrocya…
Apr 2, 2022
numerade.com
K_{\mathrm{a}} for hydrocyanic acid, \mathrm{HCN}, is 4.9 \time... | Filo
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