Question

10/24/14

fic current is passed through water and bubbles start forming. What is a logical conclusion
for the bubbles?
A) Water is evaporating.
B) The water had impurities in it.
C) A physical changes has occurred.
D) Hydrogen and oxygen are being formed.

Answer 1

D) Hydrogen and oxygen are being formed.

Step-by-step explanation:

The compound water is breaking down into its elemental components and Hydrogen and oxygen are being formed

Answer 2

d = Hydrogen and oxygen are being formed.

Step-by-step explanation:

When current is passed through the water electrolysis take place.

Water is splitted into hydrogen and oxygen gas. Because of this formation bubbles are formed.

At cathode:

2H₂O + 2e⁻ → H₂ + 2OH⁻

Cathode is negatively charged and reduction take place on it.

At anode:

4OH⁻ → O₂ + 2H₂O + 4e⁻

Anode is positively charged and oxidation take place on it.

The over all reaction can be written as:

Chemical equation:

2H₂O (electricity) → 2H₂ + O₂