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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
Write balanced chemical equations for the following word equation:
Calcium oxide + water → Calcium hydroxide
Write balanced chemical equations for the following word equation:
Sodium + chlorine → Sodium chloride
Write balanced chemical equations for the reactions represented by word equations in the conditions for a chemical reaction.
Balance the following equations Also name the products formed.
`K+CI_2→ KCI`
Write a balanced molecular equation for the following word equation:
\[\ce{Copper hydroxide + nitric acid->Copper nitrate + water}\]
Balance the following equation:
\[\ce{CaO + HCl->CaCl2 + H2O}\]
Balance the following equation:
\[\ce{Fe2O3 + H2->Fe + H2O}\]
Balance the following equation:
\[\ce{CuO + NH3->Cu + H2O + N2}\]
Balance the following important equation:
NaHCO3 + H2SO4 → Na2SO4 + H2O + CO2
Balance the following important equation:
ZnO + NaOH → Na2ZnO2 + H2O
Balance the following important equation:
NaAlO2 + H2O → NaOH + Al(OH)3
Balance the following important equation:
\[\ce{Pb3O4 + HCl -> PbCl2 + H2O + Cl2}\]
Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is
Write the balanced chemical equations for the following reactions and identify the type of reaction in each case.
- Iron (III) oxide reacts with aluminum and gives molten iron and aluminum oxide.
- Magnesium ribbon is burnt in an atmosphere of nitrogen gas to form solid magnesium nitride.
- Chlorine gas is passed in an aqueous potassium iodide solution to form potassium chloride solution and solid iodine.
- Ethanol is burnt in air to form carbon dioxide, water and releases heat.
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.
Write the balanced chemical equation for the following reaction
Sodium hydrogencarbonate on reaction with hydrochloric acid gives sodium chloride, water and liberates carbon dioxide.
Write a balanced chemical equation of the following reaction and also classify them.
Iron (III) oxide on heating with carbon monoxide gas reacts to form solid iron and liberates carbon dioxide gas.
Complete and balance the following equation:
\[\ce{CuSO4 + NH3OH ->}\]
Write the balanced equation for the following chemical reaction.
\[\ce{Hydrogen + Chlorine -> Hydrogen chloride}\]
