12. Which of the following salts is classified as a "strong acid-strong base salt"? a) NH4CN...

12. Which of the following salts is classified as a "strong acid-strong base salt"?

a) NH4CN

b) Li2C2H3O2

c) Li3PO4

d) Na2CO3

e) LiI

Solutions

Expert Solution

Strong acid: Acid which dissociates completly in a solution are strong acids. Similarly, bases which dissociates completly in a solution are strong bases.

a) NH4CN NH3 + HCN

Thus base in this reaction is NH3 which is weak base. Hence, NH4CN is not "strong acid-strong base salt".

b) LiC2H3O2 2Li⁺ + ACO^-

Thus the given salt formed is from weak acid so it is not "strong acid-strong base salt".

Note: I think molecular formula is LiC2H3O2 and not Li2C2H3O2

c) Li3PO4 PO4^-3 + 3Li⁺

Thus the given salt formed is from weak acid so it is not "strong acid-strong base salt".

d) Na2CO3 2Na⁺ + CO₃^--

Thus the given salt formed is from weak acid so it is not "strong acid-strong base salt".

e) LiI Li⁺ + I^-

Thus the given salt is formed from strong acid HI and strong base LiOH. Thus this is the salt of "strong acid-strong base salt".

Answer is option e) LiI.

queen_honey_blossom answered 1 year ago

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