Advertisements
Advertisements
Question
What are the limitations of a chemical equation ?
Advertisements
Solution
- It does not inform about the physical states of the reactants and the product i.e. whether they are solids, liquids and gases.
- It does not inform about the concentration of reactants and products.
- It does not inform about the time taken for the completion of the reaction.
- It does not inform about the rate at which a reaction proceeds.
- It does not inform about the heat changes during the reaction i. e. whether the heat is given out or absorbed.
- It does not inform about the conditions such as temperature, pressure, catalyst etc. which affect the reaction.
- It does not inform about the nature of the reaction i.e. whether it is reversible or irreversible.
APPEARS IN
RELATED QUESTIONS
Balance the following equation. Also name the products formed.
`NaNO_3→ NaNO_2 + O_2 ` Name of product (s)
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{PbO2 + 4HCl->PbCl2 + H2O + Cl2}\]
Balance the following important equation:
Fe + HCl → FeCl2 + H2
Balance the following important equation:
Mg3N2 + H2O → Mg(OH)2 + NH3
Balance the following important equation:
Ca(HCO3)2 + HNO3 → Ca(NO3)2 + H2O + CO2
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
A solution of potassium chloride when mixed with silver nitrate solution, an insoluble substance is formed. Write the chemical reaction involved and mention the type of the chemical reaction.
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.
What happens when a piece of
- zinc metal is added to copper sulphate solution?
- aluminium metal is added to dilute hydrochloric acid?
- silver metal is added to copper sulphate solution?
Also write the balanced chemical equation if the reaction occurs.
What are the points to be followed while balancing a chemical equation?
