What Mass of Sodium Cyanide Must Be Added to 250

question 107

Multiple Choice

What mass of sodium cyanide must be added to 250. mL of water in order to obtain a solution having a pH of 10.50? [K_a(HCN) = 4.9 * 10^-10]

• A) 240 g
• B) 0.032 g
• C) 0.059 g
• D) 0.94 g
• E) 0.24 g

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Lifespan Human Development

The study of how people grow, change, and stay the same throughout their entire life, from conception to death.