How does sodium cyanide affect pH if it has no H or O atoms?

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kwikness
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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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