Question

look at the picture given below and answer the question that follow.


a. what Could be the aim of the experiment?

b. why do you think germinating seed are being used in the experiment?.

c. why has lime water in the test tube turn milky

Answer 1

Answer:

1. the aim of experiment is to show the fact that CO2 turn lime water milky
2. because germinating seed produce CO2
3. lime water turns milky by the CO2 produced by seeds

Answer 2

Let us conduct the experiment

Explanation:

This experiment conducted to identify the gas released .

a)The aim of the experiment

By Using the experimental setup, to determine the gas released is carbondioxide.

b) Germinating seeds are used in this experiment because, the germinating seeds release carbondioxide gas while respiration. The seeds take in oxygen and release out carbondioxide.

c) Lime water is the common name for calcium hydroxide (Ca(OH)₂.

The carbondioxide gas turns lime water(transparent) to milky, due to the formation of CaCO₃ which is insolube.

This is a confirmatory test that the gas released by the germination seeds is carbondioxide gas.

The reaction involved is :

CO₂ + Ca(OH)₂--> CaCO₃ + H₂O

                           (milkiness due to calcium carbonate )