Question

Q. 8 When added to cold water, which metal produces lots of bubbles rapidly?

A. Sodium

B. Copper

C. Magnesium

D. Zinc​

Answer 1

Answer:

(D)

Yes, the bubbles produced are actually pure hydrogen gas which is released from the acid reacting with the metal.

Water is too weak to react with metals except slowly. The reaction is usually run with a strong acid such as hydrochloric and a reactive metal such as zinc. The formula for this reaction is 2HCl + Zn ←-> H2 + ZnCl2. As you can see from the formula, the only place the hydrogen can come from is the acid.

Answer 2

Explanation:

HLW....DUDE.....

HERE IS YOUR CORRECT ANSWER......

OPTION (A) SODIUM

BECAUSE:

SODIUM react rapidly in cold water to form their respective metal hydroxides and hydrogen gas. So, the bubbles will surely be due to the hydrogen produced.

I HOPE IT HELPS U A LOT........

TQ....FOR ASKING THIS QUESTION.....