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In the experiment to demonstrate that CO...

In the experiment to demonstrate that `CO_(2)` is given out during respiration, what would you observe in the delivery tube dipped in water?

A

Water level rises in the delivery tube

B

Water turns milky and rises in the delivery tube

C

Water turns milky but does not rise in the delivery tube

D

Water level in the delivery tube remains unchanged

Text Solution

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The correct Answer is:
To answer the question regarding the observation in the delivery tube dipped in water during the experiment to demonstrate that CO₂ is given out during respiration, we can follow these steps: ### Step-by-Step Solution: 1. **Setup the Experiment**: - Use germinating seeds, as they are metabolically active and will respire quickly. - Place the seeds in a conical flask and seal it with a cork. The cork should have a bent glass delivery tube inserted into it. 2. **Introduce KOH Solution**: - Place a KOH (potassium hydroxide) solution in the flask. KOH is used because it absorbs carbon dioxide (CO₂). 3. **Connect the Delivery Tube**: - The delivery tube should be connected to a beaker filled with water. The end of the delivery tube should be submerged in the water. 4. **Observe the Respiration Process**: - As the germinating seeds respire, they will release CO₂. However, since KOH absorbs CO₂, the gas will not remain in the flask. 5. **Vacuum Creation**: - As KOH absorbs the CO₂ released by the seeds, a vacuum is created in the flask. This vacuum causes a drop in pressure inside the flask. 6. **Water Movement**: - Due to the created vacuum, water from the beaker will be drawn up into the delivery tube to fill the space left by the absorbed CO₂. 7. **Final Observation**: - The final observation in the delivery tube will be that the water level rises. This rise in water level indicates that CO₂ is being produced by the seeds and absorbed by KOH, leading to a vacuum that pulls water up the tube. ### Conclusion: The correct observation in the delivery tube dipped in water is that the water level rises in the delivery tube.
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The following experimental set-ups were kept in the laboratory to show that CO_(2) is given out during respiration’. After 2 hours, in which delivery tube does the water rise?

In the experiment to show that CO_(2) is given out during respiration, which chemical is taken in the small test tube two show the liberation of CO_(2) gas

Knowledge Check

  • In the experiment to show that CO_(2) is given out during respiration by germinating seeds, the student uses:

    A
    Lime water
    B
    Alcohol
    C
    KOH solution
    D
    Iodine solution

  • In the experiment to show that carbon dioxide is given out during respiration in humans,the student uses:

    A
    lime water
    B
    alcohol
    C
    potassium hydroxide solution
    D
    iodine solution

  • The experimental set up shown here to demonstrate thet ' CO_(2) is given out during respiration',did not yield expected results because:

    A
    the flask was not air tight
    B
    there was no KOH in a test tube in the flask
    C
    the delivery tube was dipped in water
    D
    the germinating seeds were not immersed in water

    • Similar Questions

    Explore conceptually related problems

    What type of seeds are used in experiment to show that CO_(2) is given out during respiration ?

    What type of seeds are used in experiment to show that CO_(2) is given out during respiration ?

    In the experimental set up to show that "CO_(2) is given out during respiration", name the substance taken in the small the small test tube kept in the conical flask. State its function and the consequences of its use.

    An experimental set-up is given here to demonstrate that CO_(2) is given out during respiration. Four students made the following observations marked as I, II, III and IV. I. Level of water remained the same in both the beaker and the delivery tube II. Level of water increased in the delivery tube III. Level of water reduced in both the beaker and the delivery tube IV. Water ascends into the delivery tube and back flows into the beaker. Which one of the above is the correct observation?

    The following experimental set-ups were kept in the laboratory to show that ' CO_(2) is given out during respiration'. After two hours, stuents observed that water rises in the delivery tube:

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