Take a plastic mug Drill two holes at its base and fit rubber stoppers in these holes, Oxygen , Insert carbon electrodes in these rubber stoppere as shown in Fig. 1.6. Test tube - Conneet these eleetrodes to a 6 volt battery Graphite rod # Fill the mug with water such that the clectrodes are immerned. Add a few drops of dilute sulphuric acid to the water, Take two test tubes filled with water and Anode Invert them over the two carbon electrodes. * Switch on the current and leave the apparatus undisturbed for some time, # You will observe the formation of bubbles at both the electrodes. These bubbles displace water in the test tuben. Is the volume of the gas collected the same in both the test tubes? Once the teet tubes are filled with the respective gases, remove them carefully, Test these gases one by one by bringing a burning candle close to the mouth of the test tubes, CAUTION: This step must be performed carefully by the teacher, What happens in each case? Which gas is present in each test tube?
(1) Is the volume of the gas collected the same in both the test tubes?
(2) what happens in each case
Answers
Answer:
The gases formed are oxygen and hydrogen.
Explanation:
1. Take a plastic mug. Drill two holes at its base and fit rubber stoppers in these holes. Insert carbon electrodes in these rubber stoppers as shown in figure. 2. Connect these electrodes to a 6 volt battery. 3. Fill the mug with water such that the electrodes are immersed. Add a few drops of dilute sulphuric acid to the water. 4. Take two test tubes filled with water and invert them over the two carbon electrodes. 5. Switch on the current and leave the apparatus undisturbed for some time. 6. You will observe the formation of bubbles at both the electrodes. These bubbles displace water in the test tubes. 7. The gas collected in test tube attached to cathode is twice in volume than the gas collected at anode. 8. Once the test tubes are filled with the respective gases, remove them carefully. 9. The burning match stick or candle when brought near to the test tube containing gas obtained at cathode, burns with a pop sound indicating the presence of hydrogen gas.Read more on Sarthaks.com - https://www.sarthaks.com/752048/give-an-activity-to-prove-that-water-contains-h-o-in-the-ratio-of-2-1