Advertisements
Advertisements
Question
Which among the following change is exothermic or endothermic in nature?
Dissolution of sodium hydroxide in water
Advertisements
Solution
Exothermic
APPEARS IN
RELATED QUESTIONS
Balance the following equation:
H2 + O2 → H2O
Balance the following equation. Also name the products formed.
`Zn+ HCI → ZnCI _2 + H_2`
Balance the following equation. Also name the products formed.
`PbCO _3 → PbO +CO_2`
Balance the following equation. Also name the products formed.
`FeCI_2 + CI_2 → Fe CI_3`
Differentiate between a ‘word equation’ and a ‘molecular equation’ with a suitable example.
Balance the following equation:
\[\ce{Na2O + H2O->NaOH}\]
Balance the following equation:
\[\ce{Pb3O4 + HCl->PbCl2 + H2O + Cl2}\]
Balance the following equation:
\[\ce{ZnO + NaOH->Na2ZnO2 + H2O}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{2Na + 3H2O->2NaOH + H2}\]
Balance the following important equation:
Pb(NO3)2 + NaCl → NaNO3 + PbCl2
Balance the following important equation:
NH3 + O2 → NO + H2O (catalytic oxidation of NH3)
Balance the following important equation:
C + HNO3 (conc.) → CO2 + H2O + NO2
Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?
- Displacement reaction
- Precipitation reaction
- Combination reaction
- Double displacement 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
Write the balanced chemical equation for the following reaction
Sodium carbonate on reaction with hydrochloric acid in equal molar concentrations gives sodium chloride and sodium hydrogencarbonate.
Ferrous sulphate decomposes with the evolution of a gas having a characteristic smell of burning sulphur. Write the chemical reaction involved and identify the type of reaction.
Why do fire flies glow at night ?
Write a balanced chemical equation of the following reaction and also classify them.
Hydrogen sulphide gas reacts with oxygen gas to form solid sulphur and liquid water.
Complete and balance the following equation:
\[\ce{Cu + Conc{.} HNO3 ->}\]
