Calculating pH of a NaCN Hints & Tips

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To calculate the pH of a 0.200M Sodium Cyanide (NaCN) solution, it's important to recognize that NaCN hydrolyzes in water, affecting the pH. Sodium cyanide dissociates into Na+ and CN-, with CN- acting as a strong conjugate base of the weak acid HCN. The hydrolysis of CN- leads to the formation of hydroxide ions, which increases the pH of the solution. The Bronsted-Lowry definition of acids and bases is relevant here, as it helps to understand the behavior of CN- in water. Utilizing the hydrolysis reaction and the equilibrium expression will allow for the calculation of the pH.
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Hi, I have the following problem:

Calculate the pH of a 0.200M Sodium Cyanide solution.

I'm confused because this salt has no H or O atoms in it. How could it affect the pH of a solution?
What formulas would I need to solve this? My final is tomorrow and I'm really worried. Thank you for any help.
 
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