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प्रश्न
Explain, giving one example of the following chemical changes:
Double decomposition
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उत्तर
Double decomposition is a type of chemical change in which two compounds in a solution react to form two new compounds by mutual exchange of radicals. Double decomposition reaction is also called a double displacement reaction.
\[\ce{AB + CD -> AD + CB}\]
Example - \[\ce{AgNO3 + NaCl -> AgCl \downarrow + NaNO3}\]
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संबंधित प्रश्न
State the type of reactions for the following represent and balance the ones that are not balanced.
Fe + CuSO4→ FeSO4 + Cu
State the type of reactions for the following represent and balance the ones that are not balanced.
PbO2 + SO2→ PbSO4
State the type of reactions for the following represent and balance the ones that are not balanced.
KNO3 + H2SO4 → HNO3 + KHSO4
State the type of reactions for the following represent and balance the ones that are not balanced.
CuO+H2→ Cu+ H2O
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 |
State which of the substance given below evolve oxygen gas on thermal decomposition.
Washing soda
Define the following type of chemical change or reaction with a suitable example.
Decomposition reaction
Convert hydrogen to hydrogen chloride by a direct combination reaction.
Give a balanced equation for thermal decomposition of lead nitrate
Complete the statement by filling in the blank with the correct word:
Direct combination reaction of sulphur dioxide with water gives ________.
