Advertisements
Advertisements
प्रश्न
Give reason for the following:
The catalytic oxidation of sulphur dioxide to sulphur trioxide is represented by a double arrow {⇌}
between the reactants and products, formed in the chemical reaction.
Advertisements
उत्तर
The reaction is reversible shown by the double arrow.
The Equation of Oxidation of sulphur dioxide to sulphur trioxide is as follows:
\[\ce{2SO2 + O2 ⇌[V2O5][450°C] 2 SO3 + \triangle}\]
[Vanadium pentoxide (V2O5) - catalyst]
APPEARS IN
संबंधित प्रश्न
How do the following help in bringing about a chemical change?
heat.
Give reason.
Acidic soil is treated with quick lime.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Reduction is a chemical reaction in which there is
- removal of hydrogen
- removal of oxygen
- addition of oxygen
- none of these
FILL IN THE BLANK
A .............. change is a temporary change.
FILL IN THE BLANK
Distillation is a method of obtaining pure ............. from a solution.
TRUE \ FALSE
A precipitation reaction takes place only in a solution.
Explain the following reaction with one suitable example of Combination reactions .
What do you understand by precipitation reaction? Explain with examples.
Give an example of a photochemical reaction.
Name: Two nitrates that do not produce nitrogen dioxide on heating.
Give reason for the following:
A characteristic change of colour is seen when a piece of iron is added to copper [II] sulphate solution.
Complete the table given below.
| Addition of dil. H2SO4 to FeS | Odour of gas evolved |
Complete the table given below.
| Flame test for calcium chloride | Acid used for flame test |
State the following reaction represent oxidation or reduction.
\[\ce{Cl- ->Cl}\]
When an aqueous solution of potassium chloride is added to an aqueous solution of silver nitrate, a white precipitate is formed. Give the chemical equation of this reaction.
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
What changes do you expect?
Vanaspati is obtained from vegetable oils by the addition of ______ to the oils.
Iron and rust are the same substances.
Write the effects of chemical reactions.
