Advertisements
Advertisements
Question
State one appropriate observation of the following:
Which gas is evolved when potassium sulphite with dilute hydrochloric acid.
Solution
Ethene gas decolourises the purple colour of KMnO4, whereas ethane does not decolourise KMnO4 solution.
APPEARS IN
RELATED QUESTIONS
How will you prepare hydrochloric acid in laboratory? OR
Describe briefly the method employed to dissolve hydrogen chloride gas in water as it is prepared. What is the purpose of funnel while preparing hydrochloric acid from HCI gas?
Explain, why (or give reasons for)
Hydrochloric acid cannot be concentrated above 22.2% by boiling.
Explain, why (or give reasons for)
Only a very dilute solution of hydrogen chloride in water can be concentrated by boiling the solution while a very concentrated solution would become less concentrated when boiled.
Give two tests for hydrochloric acid.
Fill in the blank:
___________ agent converts hydrochloric acid to chlorine.
Write equation for the reaction between hydrochloric acid of the following: Manganese dioxide
Why is hydrogen chloride not collected over water?
Aqua regia is a mixture of ______.
In the laboratory preparation of hydrochloric acid, \[\ce{HCl}\] gas is dissolved in water.
- Draw a diagram to show the arrangement used for the absorption of \[\ce{HCl}\] 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 \[\ce{HCl}\] gas when the reactants are:
- Below 200°C
- Above 200°C
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.
