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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Problem Details

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