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Questions
State your observation for the following case:
Paper soaked in potassium permanganate solution is introduced into a gas jar of sulphur dioxide.
State your observations when paper soaked in potassium permanganate solution is introduced in each case into a jar of sulphur dioxide.
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Solution
The bleaching effect of sulphur dioxide causes the pink tint of potassium permanganate paper to turn colourless.
RELATED QUESTIONS
Name the following :
The precipitate obtained by treating aqueous lead nitrate with dilute sulphuric acid.
Name the following:
The precipitate obtained by treating aqueous barium chloride with dilute sulphuric acid.
Give reason for the following:
When concentrated sulphuric acid is added to sugar/glucose, a black mass is left behind.
Copy and complete the following table.
Column 3 has the names of gases to be prepared using the substance you enter in column 1, along with dilute or concentrated sulphuric acid, as indicated in column 2.
| Column 1 | Column 2 | Column 3 |
| Substance reacted with acid | Dilute or concentrated sulphuric acid | Gas |
| Hydrogen | ||
| Carbon dioxide | ||
| Only chlorine |
Write the equation for the laboratory preparation of :
(i) Sodium sulphate using dilute sulphuric acid.
(ii) Lead sulphate using dilute sulphuric acid.
State your observation for the following case :
Moist blue litmus is introduced into a gas jar of sulphur dioxide.
State one appropriate observation of the following:
Concentrated sulphuric acid is added dropwise to a crystal of hydrated copper sulphate.
State one appropriate observation of the following:
Dehydration of concentrated sulphuric acid with sugar crystals.
Give one equation to show the following property of sulphuric acid:
As a non-volatile acid
Write a balanced equation for the following conversion:
Lead sulphate from lead nitrate and sulphuric acid.
Convert the following reaction into a balanced chemical equation:
Sodium hydroxide to sodium sulphate using sulphuric acid.
