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प्रश्न
State one appropriate observation of the following:
Which gas is evolved when potassium sulphite with dilute hydrochloric acid.
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उत्तर
Ethene gas decolourises the purple colour of KMnO4, whereas ethane does not decolourise KMnO4 solution.
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संबंधित प्रश्न
What would happen if :
Concentrated hydrochloric acid is kept open.
How can you prove that hydrochloric acid contain :
Hydrogen
Write balanced equation for the following reaction:
Red lead (trilead tetroxide) is warmed with concentrated hydrochloric acid.
State one reason why tap water is not used to prepare a solution of silver nitrate in the laboratory.
In the laboratory preparation of hydrochloric acid, HCl gas is dissolved in water.
- Draw a diagram to show the arrangement used for the absorption of HCl gas in water.
- State why such an arrangement is necessary? Give two reasons for the same.
- Write the chemical equation for the laboratory preparation of HCl gas when the reaction is:
- Below 200°C
- Above 200°C
State one appropriate observation of the following:
Copper sulphate is treated with dilute hydrochloric acid.
State one appropriate observation of the following:
Concentrated HCl is made to react with mangesediaoxide
State your observation when dilute hydrochloric acid is added to sodium thiosulphate.
State your observation when :
Dilute hydrochloric acid is added to copper carbonate.
Name the anion present in the following compound:
The action of heat on the insoluble compound C produces a gas which turns lime water turbid.
