Respuesta :

pH is logarithmically related to the concentration of H+ ions. This will be the formula that will be used for this problem. We calculate as follows:

HCN = H+ + CN-

1.85 g HCN ( 1 mol / 27.02 ) ( 1 mol H+ / 1 mol HCN ) = 0.068 mol H+

Concentration = 0.068 / 3.50 = 0.02 M

pH = -log 0.02
pH = 1.71

The pH is mathematically given as

pH = 1.71

What is the pH?

Generally, the equation for the Chemical Reaction  is mathematically given as

X= H^{+} + xN^{+}

Therefore

1.85 g X ( 1 / 27.02 ) ( 1 of H+ / 1 of X ) = 0.068 mol H+

The concentration of X

x = 0.068 / 3.50

x= 0.02 M

Therefore

pH = -log 0.02

pH = 1.71

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