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प्रश्न
(a) What is synthesis?
(b) What kind of chemical reaction is synthesis? Support your answer by an example.
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उत्तर
(a) A reaction in which two or more substances combine together to form a single substance is called a synthesis or combination reaction.
A + B → AB
In the above reaction, substances A and B combine to give a molecule of a new substance, AB.
(b) Carbon burns in oxygen to form a gaseous compound, carbon dioxide.
\[\ce{C + O2 -> CO2}\]
APPEARS IN
संबंधित प्रश्न
State which of the substance given below evolve oxygen gas on thermal decomposition.
Trilead tetroxide
The reaction can be classified as:
State which of the following type, take place in the reaction is given below.
\[\ce{AgNO3 + HCl->AgCl + HNO3}\]
Give a balanced equation for the following reaction of synthesis involving the formation of:
A salt – from a trivalent metal and a coloured gas.
Convert hydrogen to hydrogen chloride by a direct combination reaction.
Give a balanced equation for thermal decomposition of lead carbonate
Complete the statement by filling in the blank with the correct word:
Formation of hydrogen chloride from hydrogen and chlorine is an example of __________.
Give a balanced equation for the following type of reaction:
A direct combination reaction between phosphorus and neutral gas.
Give a balanced equation for the following type of reaction:
A soluble salt of lead formed from an insoluble base by double decomposition – neutralization.
Give a balanced equation for the following type of reaction:
A decomposition reaction of a salt which leaves behind a silvery metal.
Match the chemical reactions in List I with the appropriate answer in List II.
| List I | List II |
| 1. \[\ce{AB⇌[heat]A + B}\] | A: Double decomposition |
| 2. \[\ce{AB->A + B}\] | B: Thermal dissociation |
|
3. \[\ce{X+Y- + AB+B- ->X+B- + A+Y-}\] |
C: Endothermic reaction |
| 4. \[\ce{X + YZ->XZ + Y}\] | D: Displacement reaction |
| 5. \[\ce{X + Y->[heat]XY - \Delta}\] | E: Decomposition reaction |
