Calculate the PH of a Solution Formed by Mixing 250

question 67

Multiple Choice

Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 mol L^-1 NH₄Cl with 200.0 mL of 0.12 mol L^-1 NH₃. The K_b for NH₃ is 1.8 × 10^-5.

• A) 9.06
• B) 9.45
• C) 4.55
• D) 4.74
• E) 9.26

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Definitions:

Mutually Exclusive

Mutually exclusive events are those that cannot occur simultaneously; the occurrence of one event excludes the possibility of the other.

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Conditional Probability

The likelihood of one event happening when it is known that a second event has taken place already.

Union

In set theory, the combination of two sets to form a set that includes any elements that are a member of at least one of the original sets.