Question

19. Which of the following compound is alkaline in aqueous medium.
(1) NaCO3
(2) Naci
(4) CuSO4
(3) H2CO3
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Answer 1

Answer:

Na2co3

Explanation:

Na2co3 is made up of NaOh and H2CO3.

thats why in aqueous medium it behaves as an alkaline substance.

Hope it may help you

Please mark the answer as brainlest

Answer 2

Answer:

Hey mate, hope this helps you

Explanation:

The answer is Na2CO3.

Sodium carbonate when dissolved in water is hydrolysed to form a weak acid, carbonic acid and a strong base sodium hydroxide. Hence, an aqueous solution of sodium carbonate is alkaline in nature.

BTW your options are not having the correct spelling