Paper 1 - Quantitative Chemistry

Question 1

In electrolysis, what happens if the metal is more reactive than hydrogen?

Answer 1

If the metal is more reactive than hydrogen in electrolysis then hydrogen gas forms at the cathode

Question 2

At the positive electrode (anode), if you get oxygen what does that mean?

Answer 2

If you get oxygen at the positive electrode that means the non-metal involved is not F, Cl, Br or I

Question 3

What is the equation for when oxygen forms at the positive electrode?

Answer 3

The equation for when oxygen forms at the positive electrode is 4OH- > O2 + 2H20 + 4E-