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?
विकल्प
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
Why should a magnesium ribbon be cleaned before it is burnt in the air?
Translate the following statement into a chemical equation and then balance the equation:
Carbon disulphide burns in air to give carbon dioxide and sulphur dioxide.
Translate the following statement into a chemical equation and then balance the equation:
Aluminium metal replaces iron from ferric oxide, Fe2O3, giving aluminium oxide and iron.
Balance the following equation:
\[\ce{Fe + O2 -> Fe2O3}\]
Balance the following equation:
\[\ce{HNO3 + Ca(OH)2 -> Ca(NO3)2 + H2O}\]
Rewrite the following information in the form of a balanced chemical equation:
Magnesium burns in carbon dioxide to form magnesium oxide and carbon.
Write a balanced chemical equation with state symbols for the following reaction:
Barium chloride solution reacts with sodium sulphate solution to give insoluble barium sulphate and a solution of sodium chloride.
What is a chemical equation? Why it is necessary to balance it?
Balance the following equation:
\[\ce{S + HNO3 -> H2SO4 + NO2 + H2O}\]
Balance the following equation:
H2O + Cl2 → HCl + O2
(a) Give only one suitable chemical test to identify the following gases.
- Ammonia
- Sulphur dioxide
- Hydrogen Chloride
- Chlorine
- Carbon Dioxide
- Oxygen
- Hydrogen
(b) Select a basic gas mentioned in Q.1 (a). How is the basic nature suspected?
(c)Select acidic gases from the gases mentioned in Q.1 (a). How is the acidic nature suspected?
(d) State the gas responsible for bleaching action.
(e)Which gas turn blue cobalt chloride paper light pink?
How is a flame test performed?
Give word equation for the following chemical reaction and give the names of the product formed.
NH3 + HCl→ NH4Cl
Give an example of a chemical equation in which two reactants form:
three product
Balance the following simple equation:
N2 + O2 ⇌ NO
Balance the following simple equation:
Fe + Cl2 → FeCl3
Balance the following simple equation:
FeCl2 + Cl2 → FeCl3
Balance the following simple equation:
NaHCO3 + H2SO4 → Na2SO4 + H2O + CO2
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
CaC2 + N2 → 2CaCN2 + C
Reema took 5ml of Lead Nitrate solution in a beaker and added approximately 4ml of Potassium Iodide solution to it. What would she observe?
