# Problem: Answer the following questions dealing with the weak base ammonia.  A. Ammonia, NH3, is incredibly soluble in water. Why? B. Calculate the molarity and molality of a solution that is 30.0 g NH 3 in 70.0 g water. The density of that solution is 0.982 g/mL.          C. Consider the following solutions: 0.1 M NH 3(aq) and 0.1 M NaOH(aq). Which solution has the highest osmotic pressure? ____________________________ Why?   Which solution has the highest boiling point? ____________________________  Why?   Which solution has the highest pH? ____________________________ Why?     D. Calculate the pH of 0.1 M NH 3(aq). Kb of NH3 is 1.8 x 10-5 .

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Answer the following questions dealing with the weak base ammonia.

A. Ammonia, NH3, is incredibly soluble in water. Why?

B. Calculate the molarity and molality of a solution that is 30.0 g NH 3 in 70.0 g water. The density of that solution is 0.982 g/mL.

C. Consider the following solutions: 0.1 M NH 3(aq) and 0.1 M NaOH(aq).

Which solution has the highest osmotic pressure? ____________________________

Why?

Which solution has the highest boiling point? ____________________________

Why?

Which solution has the highest pH? ____________________________

Why?

D. Calculate the pH of 0.1 M NH 3(aq). Kb of NH3 is 1.8 x 10-5 .

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Weak Bases concept. If you need more Weak Bases practice, you can also practice Weak Bases practice problems.

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Based on our data, we think this problem is relevant for Professor Morkowchuk's class at UVA.