Class 10 Science Chemical reaction and Equation: NCERT Solutions for Question 2
Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas.
Electrolysis of water is carried out in this activity. In which electric current is passed through water with sulphuric acid.
2H2O(l) → 2H2(g) + O2(g)
The gas collected over cathode is Hydrogen and the gas collected over anode is Oxygen.
Volume of H2 gas is double than that of O2 gas collected over anode. Through a balanced chemical equation, its clear that two molecules of hydrogen and one molecule of oxygen evolved.
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