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Describe the laboratory preparation of carbon dioxide with a labelled diagram.
Study the given figure and answer the following questions:
- Which gas is being collected in the gas jar?
- Write a balanced chemical reaction for preparation of this gas.
- Which litmus paper is used to identify the gas?
- Why is this gas collected in the gas jar kept straight upright?
What is upward displacement of air?
Name any two chemicals which are required to prepare carbon dioxide gas in laboratory.
A colorless and odorless water-soluble gas reacts with ammonia at high temperatures to form a nitrogen fertilizer, i.e., urea. Suggest two other applications of the same gas. Also, draw a well-labelled diagram to demonstrate the laboratory preparation of that gas.
A student used powder of calcium carbonate rather than marble pieces for the laboratory preparation of CO$\rm _2$ gas.
- Write a balanced chemical equation for the chemical reaction mentioned above.
- Why did he/she use powder of marble instead of marble chips?
Clarify the cause of selecting dil. HCl instead of dil. H$_2$SO$_4$ during laboratory preparation of carbon dioxide. What tests do you need to perform before entering into well to prevent from the suffocation?