Answer the following:
A glowing splint is brought near one test tube, and it rekindles. A burning matchstick is brought near the other test tube, producing a ‘pop’ sound.
1. What do these tests confirm? Provide the volume ratio of the gases released.
2. A glowing splinter inserted into the test tube after the reaction burns more brightly. What does this indicate?
3. Why does electrolysis not occur effectively in pure water, and what can be made to increase the conductivity?