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Question
- Name the experiment illustrated below.
- State the colour of the water that has entered the round-bottomed flask.
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Solution
1. The experiment is the fountain experiment and is used to demonstrate solubility.
2. The colour of the water that has entered the round-bottomed flask is red.
RELATED QUESTIONS
When dilute HCl is added to a salt Q, a brisk effervescence is produced and the gas turns lime water milky.
When NH4OH solution is added to the above mixture (after adding dilute HCl), it produces a white precipitate which is soluble in excess NH4OH solution.
Study the figure given below and answer the questions which follow:
- Identify the gas Y.
- What property of gas Y does this experiment demonstrate?
- Name another gas which has the same property and can be demonstrated through this experiment.
Name the following:
Gas obtained by treating metals with hydrochloric acid.
How is the gas collected and why?
Describe an experiment to prove the following:
HCI gas is heavier than air.
Name two gases which combine chemically to form a solid.
(a) Name the experiment illustrate above.
(b) Which property of hydrogen chloride is demonstrated by this experiment?
(c) State the colour of the water that has entered the round-bottomed flask.
The diagram shows an apparatus for the laboratory preparation of hydrogen chloride.
(i) Identify A and B
(ii) Write the equation for the reaction
(iii) How would you check whether or not the gas jar is filled with hydrogen chloride?
(iv) What does the method of collection tell you about the density of hydrogen chloride.
The aim of the fountain experiment is to prove that
State the following:
The drying agent used in the laboratory preparation of HCl gas.
