You begin with 100 mL of 0,250 M HCN and add to it 0,75 M NaOH at 25°C (HCN Ka = 6,2 * 10-10) Calculate the pH at the equivalence point. / Calculate the pH after 150 mL of NaOH has been added.

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A: Welcome to bartleby ! We have to calculate pH and concentration of hydronium ion

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A: The answer to the following question is-

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A: According to Bartlby guidelines i solve only first question.You post  Second question  separately.

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Q: Use the References to access important values if needed for this question. The pH scale was designed…

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