4 Questions
Which gas is being evolved in this activity?
Hydrogen gas
What is the purpose of passing the gas through the soap solution?
To observe the bubbles formed
What happens when a burning candle is brought near a gas-filled bubble?
The bubble bursts
Are the observations the same or different when repeating the activity with different acids?
The observations are different
Study Notes
Gas Evolution
- Hydrogen gas is being evolved in this activity.
Purpose of Passing Gas through Soap Solution
- The purpose of passing the gas through the soap solution is to create a soap bubble, which helps to collect and store the gas.
- The soap solution traps the gas, making it possible to manipulate and observe it.
Burning Candle and Gas-Filled Bubble
- When a burning candle is brought near a gas-filled bubble, the flame extinguishes, indicating that the gas is not oxygen.
- This observation suggests that the gas is likely hydrogen, as it is flammable and will extinguish a flame.
Repeating the Activity with Different Acids
- The observations may be different when repeating the activity with different acids.
- The type of acid used may affect the rate of hydrogen gas evolution, the speed of bubble formation, or the overall efficiency of the reaction.
Test your knowledge on the chemical reaction between zinc and sulphuric acid with this quiz. Learn about the observations on the surface of zinc granules and the formation of bubbles in soap solution.
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