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प्रश्न
Which among the following change is exothermic or endothermic in nature?
Dissolution of sodium hydroxide in water
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उत्तर
Exothermic
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संबंधित प्रश्न
What are the limitations of a chemical equation ?
Balance the following equation. Also name the products formed.
`Na + H_2 O → Na OH + H_2`
Balance the following equation:
\[\ce{K + H2O->KOH + H2}\]
Balance the following equation:
\[\ce{Al + H2O->Al2O3 + H2}\]
Balance the following equation:
\[\ce{CuO + NH3->Cu + H2O + N2}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{2Na + 3H2O->2NaOH + H2}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{4P + 4O2->2P2O5}\]
Balance the following important equation:
ZnS + O2 → ZnO + SO2
Balance the following important equation:
Fe + HCl → FeCl2 + H2
Balance the following important equation:
\[\ce{AgCl + NH4OH -> Ag(NH3)2Cl + H2O}\]
Balance the following important equation:
MnO2 + HCl → MnCl2 + H2O + Cl2
Balance the following important equation:
Mg3N2 + H2O → Mg(OH)2 + NH3
Balance the following important equation:
NH3 + O2 → NO + H2O (catalytic oxidation of NH3)
Balance the following important equation:
Cu + H2SO4 (conc.) → CuSO4 + H2O + SO2
Which of the following is Not True with respect to the neutralisation reaction?
Which of the following is(are) an endothermic process(es)?
- Dilution of sulphuric acid
- Sublimation of dry ice
- Condensation of water vapours
- Evaporation of water
In the double displacement reaction between aqueous potassium iodide .and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which of the following can be used in place of lead nitrate?
Which of the following gases can be used for storage of fresh sample of an oil for a long time?
Which of the following are combination reactions?
- `2"KClO"_3 overset("Heat")(->) 2"KCl" + 3"O"_2`
- `"MgO" + "H"_2"O" -> "Mg"("OH")_2`
- `4"Al" + 3"O"_2 -> 2"Al"_2"O"_3`
- `"Zn" + "FeSO"_4 -> "ZnSO"_4 + "Fe"`
Which among the following change is exothermic or endothermic in nature?
Dilution of sulphuric acid
