Question

4.
How can you say that ripening of a fruit is a chemical change?
5.
Why do we see bubbles when acetic acid is added to a solution of sodium hydrogen carbonate​

Answer 1

Answer:

4 .Ripening of fruits is a chemical changes. During ripening the pigment present in the skin of the fruit changes and this can not be reversed back. it is a chemical change as once a fruit ripens it cannot turn raw again. The properties of the raw fruit are different from the properties of the ripe fruit.

5 . The formula of acetic acid is CH3COOH and the formula of sodium hydrogen carbonate is NAHCO3. When they are mixed they react and produce carbon dioxide gas that erupts out as bubbles from the solution producing water also.

Answer 2

Answer:

4.Ripening of fruits is a chemical changes. During ripening the pigment present in the skin of the fruit changes and this can not be reversed back. it is a chemical change as once a fruit ripens it cannot turn raw again. The properties of the raw fruit are different from the properties of the ripe fruit.

5.Answer: The formula of acetic acid is CH3COOH and the formula of sodium hydrogen carbonate is NAHCO3. When they are mixed they react and produce carbon dioxide gas that erupts out as bubbles from the solution producing water also.