The formula of water is H2O . It clearly indicates that one molecule of water contains two atoms of hydrogen and one atom of oxygen . the amount of hydrogen is double as compared to the oxygen . When a water molecule is broken by electrolysis, it yields 1 volume of oxygen gas. It also produces 2 volumes of hydrogen gas.

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One response to “Why is the amount of gas collected in one of the test tubes in activity 1.7 is double of the gas collected in the other? name the gas .”

  1. That’s an excellent observation, Ankush sir ! You noticed one of the most important “secrets” hidden in the formula of water itself.

    Think of a water molecule (H₂O) as a tiny, pre-made package. Each package contains:

    · 2 atoms of Hydrogen
    · 1 atom of Oxygen

    When we pass electricity through water (electrolysis), we are basically breaking these tiny packages apart.

    So, for every one package of water we break, we get:

    · 2 parts Hydrogen gas
    · 1 part Oxygen gas

    In short: The formula H₂O is like a recipe that tells us we get twice as much Hydrogen!

    Great job connecting your observation to the formula ! Thank you for the lesson Ankush sir 🤝🙏🏼

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