Question

which of the following is the salt of weak acid and strong base? (1) NaCl (2) CaSO4 (3)CH3COONa (4)all the above

Answer 1

Heya !!!


here is your answer !!!


case 1 :-


NaOH + Hcl. ====> NaCl + H20 .


here there is both strong Acid and base !!

so Option number is A is. ❎❎❎



case 2 :-



H2So4 + Ca ===> Caso4 + H2 .


here there is sulpheric acid. and. it is strong Acid so , this option also ❎❎❎.



Case 3 :-


CH3COOH + NaOH => Ch3COONa. + H20 .



hence , it satisfied the condition


so , here option number 3 is correct !!!
✅✅✅✅.




hope it helps you dear !!!





thanks !!


have a nice day !!


☺☺

Answer 2

Answer:

The option (3) $CH_{3}COONa$ is correct.

Explanation:

• $CH_{3}COONa$(sodium acetate) is an example of a basic salt.
• A strong base and a weak acid together form a basic salt.

• Sodium acetate is a product of a strong base, $Na^{+}$, weak acid, $CH_{3}COO^{-}$.
• During hydrolysis, $CH_{3}COO^{-}$ will take a $H^{+}$ ion of the water to form $CH_{3}COOH$. The $OH^{-}$ given off by water will make the solution basic.

• The pH of solution of sodium acetate will be greater than 7.

Conclusion:

The salt of a weak acid and a strong base is $CH_{3}COONa$.