For which of the following salts would you need exact K. and K, values to determine whether it is acidic, basic or neutral? O A) NH,NO3 O B) None of these c) CH;NH;CN O D) AICI3 O E) KBr

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For which of the following salts would you need exact K. and K, values to determine whether it
is acidic, basic or neutral?
O A) NH,NO3
O B) None of these
c) CH;NH;CN
O D) AICI3
O E) KBr
Transcribed Image Text:For which of the following salts would you need exact K. and K, values to determine whether it is acidic, basic or neutral? O A) NH,NO3 O B) None of these c) CH;NH;CN O D) AICI3 O E) KBr
Expert Solution
Introduction:

The salt behavior as well as its solution pH is wholly dependent on its constituents acid-base pair. The species (acid/base) which is stronger in nature will decide the solution's pH and in turn affect its pH value.

Correct Option:

In option (C), the compound CH3NH3CN is formed by the combination of weak base (methylamine CH3NH2) and weak acid (HCN) as shown below.

Chemistry homework question answer, step 2, image 1

These weak acids-base dissociates feebly in solutions. The pH of solution as well as acidic/basic nature of CH3NH3CN will depend on the concentration of acid and base.

Hence, their Ka or Kb value is required.

Thus, it is the correct option.

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