how do you test the gas released in hydrilla funnel experiment
Answers
Answer:
Invert the test tube full of water and cover the stem of the funnel. While placing the test tube, ensure that the level of the water in beaker is above the level of stem of funnel. Expose the apparatus to the sunlight. After few hours, gas bubbles will form and collect in the test tube.
Explanation:
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Answer:
We test the gas released in the Hydrilla-Funnel experiment s oxygen by inserting the glowing incense stick in the test tube inverted over the funnel with the Hydrilla plant. The oxygen gas trapped in the test tube results in bursting flames from the glowing splinter.
Explanation:
Introduction:
Green plants prepare carbohydrates in the presence of sunlight and chlorophyll using carbon dioxide and make the glucose with the release of oxygen gas and water as by-products. Photolysis of water releases electrons, protons and Oxygen during photosynthesis.
Aim: To prove that oxygen is released as the by-product of photosynthesis.
Requirements: Hydrilla plant twigs, Beaker, Funnel, test tube, pond water, glowing splinter, sunlight.
Procedure:
- Fill the three-fourths of the beaker with the pond water.
- Insert the Hydrilla twigs inside the broad end of the funnel and place it upside down inside the beaker filled with water. Invert the test tube over the funnel.
- Place the setup in the sunlight for a few hours.
- Remove the test tube and immediately insert a glowing splinter.
- The glowing splinter starts to burst into flames.
Observation:
The bubbles released from the plant gets trapped in the water at the topmost end of the test tube and the water gets displaced downwards.
Inference:
The oxygen gas produces during the photolysis reaction results in the splitting of a water molecule into oxygen, electron and proton. This oxygen evolved got trapped in the test tube which leads to the burning flames from the glowing splinter.