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प्रश्न
Write one equation for decomposition reactions where energy is supplied in the form of heat.
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उत्तर
Decomposition reaction involving absorption of heat,
- \[\ce{\underset{Zinc carbonate}{ZnCO3_{(s)}} ->[\Delta]\underset{Zinc oxide}{ZnO_{(s)}} + \underset{Carbon dioxide}{CO2_{(g)}}}\]
- \[\ce{CaCO3->[heat]CaO_{(s)} + CO2_{(g)}}\]
- \[\ce{2FeSO4(s) ->[heat] Fe2O3(s) + SO2(g) + SO3(g)}\]
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संबंधित प्रश्न
Write the balanced chemical equation for the following and identify the type of reaction.
\[\ce{Zinc carbonate(s) -> Zinc oxide(s) + Carbon dioxide(g)}\]
What does one mean by exothermic reaction? Give example.
Taking into consideration the relationship in the first pair, complete the second pair
2H2 + O2 → 2H2O :Combination Reaction :: 2HgO → 2Hg + O2:_________
Rewrite the following statements by selecting the correct options:
\[\ce{CaCO3 ->[\Delta] CaO + CO2 ^}\] is a __________ reaction.
State an important use of decomposition reactions.
Give one example of a decomposition reaction which is carried out by applying heat.
What type of chemical reaction is used to extract metals from their naturally occurring compounds like oxides or chlorides?
What type of reaction is represented by the following equation?
\[\ce{CaCO3 -> CaCO + CO2}\]
What type of chemical reaction take place when electricity is passed through water?
What type of reaction is represented by the following equation?
NH4NO2 → N2 + 2H2O
What is the colour of ferrous sulphate crystals? How does this colour change after heating?
Which of the following can be decomposed by the action of light?
(a) NaCl
(b) KCl
(c) AgCl
(d) CuCl
When a green iron salt is heated strongly, its colour finally changes to brown and odour of burning sulphur is given out.
(a) Name the iron salt.
(b) Name the type of reaction that takes place during the heating of iron salt.
(c) Write a chemical equation for the reaction involved.
Classify the following reaction as combination, decomposition, displacement, precipitation and neutralization. Also balance the equation.
\[\ce{Zn_{(s)} + H2SO4 -> ZnSO4_{(s)} + H2_{(g)}}\]
A student wants to study a decomposition reaction by taking ferrous sulphate crystals. Write two precautions he must observe while performing the experiment.
Give a balanced equation for –
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When SO2 gas is passed through a saturated solution of H2S, which of the following reaction occurs?
On heating blue coloured powder of copper (II) nitrate, in a boiling tube, copper oxide (black), oxygen gas and a brown gas X is formed
- Write a balanced chemical equation of the reaction.
- Identify the brown gas X evolved.
- Identify the type of reaction.
- What could be the pH range of aqueous solution of the gas X?
Complete the following reaction:
\[\ce{C_12H_22O11->[Heat]}\] ______ + ______.
Write one equation for decomposition reactions where energy is supplied in the form of light.
