Question

A student on adding (i) Na metal (ii) Na2

,CO3

and (iii) NaHCO3

solution in acetic acid in test tubes

A, B, C would observe that the gas evolved in the three test tubes respectively are : [1]

(a) H CO CO 222 , , (b) CO H CO 22 2 , ,

(C) CO CO H 2 22 , , (d) CO CO H 2 2​

Answer 1

Explanation:

A is the answer....................

Answer 2

The reaction between baking soda (sodium bicarbonate) and vinegar (dilute acetic acid) generates carbon dioxide gas which is a colorless and odorless gas. Hence, on adding acetic acid to sodium hydrogen carbonate in a test tube, bubbles of a colorless and odorless gas is observed.

Option C is correct.

Hope it will help you