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
What is a chemical equation ?
Write balanced chemical equations for the following word equation:
Magnesium + dil sulphuric acid → Magnesium sulphate + water
Balance the following equation. Also name the products formed.
`H_2O_2 → H_2O +O_2`
Write the balanced equation for the following chemical reaction.
\[\ce{Sodium + Water -> Sodium hydroxide + Hydrogen}\]
Write a balanced molecular equation for the following word equation:
\[\ce{Lead nitrate + sodium chloride->Sodium nitrate + lead chloride}\]
Balance the following equation:
\[\ce{Fe + Cl2->FeCl3}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{PbO2 + 4HCl->PbCl2 + H2O + Cl2}\]
Balance the following important equation:
NaHCO3 + H2SO4 → Na2SO4 + H2O + CO2
Balance the following important equation:
NaOH + H2SO4 → Na2SO4 + H2O
Balance the following important equation:
CuSO4 + NaOH → Na2SO4 + Cu(OH)2
Balance the following important equation:
NH4OH + H2SO4 → (NH4)2SO4 + H2O
Balance the following important equation:
NH3 + Cl2 → HCl + NCl3 [nitrogen trichloride]
Balance the following important equation:
S + H2SO4 (conc.) → SO2 + H2O
Name the products formed when iron filings are heated with dilute hydrochloric acid.
Write the balanced chemical equations for the following reactions and identify the type of reaction in each case.
- Nitrogen gas is treated with hydrogen gas in the presence of a catalyst at 773 K to form ammonia gas.
- Potassium hydroxide solution is treated with acetic acid to form potassium acetate and water.
- Ethanol is warmed with ethanoic acid to form ethyl acetate in the presence of concentrated H2SO4.
- Ethene is burnt in the presence of oxygen to form carbon dioxide, water and release heat and light.
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.
Mention any two information conveyed by a balanced chemical equation.
What are the points to be followed while balancing a chemical equation?
Complete and balance the following equation:
\[\ce{Cu + Conc{.} HNO3 ->}\]
