Advertisements
Advertisements
Question
Match the following:
|
a. Zn(s) + H2SO4(aq) → ZnSO4(aq) + H2(g) |
i. Photochemical decomposition |
|
b. \[\ce{2AgCI(s) ->[Sunlight] 2Ag(s) + CI2(g)}\] |
ii. Thermal decomposition |
|
c. \[\ce{2KCI ->[Electricity] 2K + CI2}\] |
iii. Displacement reaction |
|
d. \[\ce{2HgO(s) ->[\Delta] 2Hg(s) + O(g)}\] |
iv. Electrolytic decomposition |
Advertisements
Solution
|
a. Zn(s) + H2SO4(aq) → ZnSO4(aq) + H2(g) |
i. Displacement reaction |
|
b. \[\ce{2AgCI(s) ->[Sunlight] 2Ag(s) + CI2(g)}\] |
ii. Photochemical decomposition |
|
c. \[\ce{2KCI ->[Electricity] 2K + CI2}\] |
iii. Electrolytic decomposition |
|
d. \[\ce{2HgO(s) ->[\Delta] 2Hg(s) + O(g)}\] |
iv. Thermal decomposition |
APPEARS IN
RELATED QUESTIONS
State the type of reactions for the following represent and balance the ones that are not balanced.
AgNO3 + NaCl → AgCl + NaNO3
Multiple choice:
The reaction BaCl2(aq) + H2SO4(aq) → BaSO4(s) + 2HCl(aq) is
Select the correct salt from list II which on thermal decomposition exhibits the change in colour from list I.
| List I | List II |
| 1. Light green to black | A: Copper carbonate |
| 2. White to yellow [heated state] | B: Hydrated Copper sulphate |
| 3. Blue to black | C: Copper nitrate |
| 4. Orange to green | D: Ammonium dichromate |
| 5. Blue to white | E: Zinc nitrate |
State which of the substance given below evolve oxygen gas on thermal decomposition.
Washing soda
State which of the substance given below evolve oxygen gas on thermal decomposition.
Lead nitrate
State which of the substance given below evolve oxygen gas on thermal decomposition.
Ammonium dichromate
Define the following type of chemical change or reaction with a suitable example.
Double decomposition reaction
Give a balanced equation for a direct combination reaction involving:
Two compounds – resulting in the formation of a weak acid
Name a metallic oxide which on thermal decomposition is reduced to metal.
Differentiate between the following:
Decomposition reaction and a double decomposition reaction.
