Question

N the electrolysis of water,(a) name the gas collected at anode and cathode(b) why is the volume of gas collected at one electrode double than the other?(c) what would happen if dil h2so4 is not added to water? (3)

Answer 1

$\huge\mathbb{ANSWER}$

(a) Gas collected at Cathode - Hydrogen (H₂)

Gas collected at anode - Oxygen(O₂)

                                                                                                            

(b) The volume of gas at the cathode is double because in water, 2 atoms of hydrogen and one atom of oxgen is present (H₂O)

                                                                                                           

(c) If dilute H₂SO₄ is not added, electrolysis wouldn't take place due to the lack of ions to conduct electricity.

                                                                                                           

Answer 2

Hi!!!!

Electrolysis of water is the decomposition of water (H20) into oxygen and hydrogen by passing electric current.

2H₂O(I) ---------------------------- > 2H₂(g) + O₂(g)

(1)- Cathode - Hydrogen

     Anode - Oxygen

(2) - Water is made up of 2 parts of hydrogen and 1 part of oxygen. Hence, the volume of Hydrogen is double than the oxygen. The ratio is 2:1.

(3) - If dilute H2SO4 is added in water then , the electrolysis of water will speed up.