Advertisements
Advertisements
प्रश्न
A dilute ferrous sulphate solution is gradually added to the beaker containing acidified permanganate solution. The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation?
पर्याय
KMnO4 is an oxidising agent and it oxidises FeSO4
FeSO4 acts as an oxidising agent and it oxidises KMnO4
The colour disappears due to dilution; no reaction is involved
KMnO4 is an unstable compound and decomposes in presence of FeSO4 to a colourless compound.
Advertisements
उत्तर
KMnO4 is an oxidising agent and it oxidises FeSO4
Explanation -
Potassium permanganate (KMnO4) is an oxidising agent. It oxidises ferrous sulphate to ferric sulphate in the presence of dilute
H2SO4.
`underset("Purple")(2"KMnO"_4) + 8"H"_2"SO"_4 + 10"FeSO"_4 -> "K"_2"SO"_4 + 2"MnSO"_4 + 8"H"_2"O" + 5"Fe"_2("SO"_4)_3`
By taking part in the reaction, the light purple colour of the solution slowly fades and finally disappears.
APPEARS IN
संबंधित प्रश्न
Write the balanced chemical equation for the following reaction.
\[\ce{Zinc + Silver nitrate -> Zinc nitrate + Silver}\]
How will you indicate the following effect in a chemical equation?
Endothermic reaction
Balance the following equation:
\[\ce{Na + O2 -> Na2O}\]
Balance the following equation:
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Write a balanced chemical equation with state symbols for the following reaction:
Sodium hydroxide solution reacts with hydrochloric acid solution to produce sodium chloride solution and water.
What is meant by a chemical reaction? Explain with the help of an example.
One of the following is an exothermic reaction. This is:
What happens when silver nitrate solution is added to sodium chloride solution?
- Write the equation for the reaction which takes place.
- Name the type of reaction involved.
The removal of oxygen from a substance is called ______.
Write symbolic representation for the following word equation and balance them :
Carbon + Oxygen → Carbon dioxide.
Show the formation of Na2O by the transfer of electrons.
Write the chemical equation for the following word equation and balance them.
Carbon + Oxygen → Carbon dioxide
Balance the following equation:
S + H2SO4 → SO2 + H2O
Write the balanced chemical equation of the following reaction.
potassium bicarbonate + sulphuric acid → potassium sulphate + carbon dioxide + water
Identify the type of reaction taking place of the following case and write the balanced chemical equation of the reaction:
Potassium iodide reacts with lead nitrate to produce potassium nitrate and lead iodide.
What is thermit process?
Representation of the results of a chemical change – is a chemical equation.
For the equation: FeCl3 + 3NH4OH 3NH4Cl + Fe(OH)3 ↓
Answer the following:
Is the equation given above a balanced equation. Give reasons.
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
NaOH + CO2 → Na2CO3 + H2O
Match the columns.
| Reactants | Products | Types of chemical reaction | ||
| 1. | MgH2 | → | Mg + H2 | Endothermic |
| 2. | 2H2S + SO2 | → | 3S + 2H2O | Oxidation |
| 3. | CaO + H2O | → | Ca(OH)2 + heat | Exothermic |
| Redox | ||||
