Advertisements
Advertisements
Question
Write your observation and a balanced equation in the case of the following substances being heated.
Ammonium chloride
Advertisements
Solution
When ammonium chloride is heated White crystalline solid, on strong heating, sublimates to form a basic gas (NH3) and an acidic gas (HCl)
\[\ce{NH4Cl ⇌[Heat][Cool] NH3↑ + HCl↑}\]
APPEARS IN
RELATED QUESTIONS
Give one example that illustrates the following characteristics of a chemical reaction:
Change in state
Copper carbonate when heated, it turns :
State the original colour of the following substance and colour of residue obtained after heating.
Lead nitrate
Give examples of exothermic reactions i.e. heat evolved in each of the following:
(a) reaction between a solid and a liquid
(b) reaction between two gases
Give two examples of exothermic reactions seen in everyday life.
What is a chemical reaction?
Complete the table given below.
| Heat on Zinc nitrate | Colour of residue |
Discuss how acid rain occurs due to emission of smoke from vehicles and industries?
Water boiling into water vapour is an example of chemical change.
______ are substances that speed up the process of a chemical change and it will not undergo any change during the course of the reaction.
Assertion (A): Cutting paper into very small pieces is an irreversible change.
Reason (R): Physical changes are always reversible.
