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प्रश्न
What would you observe in the following case?
100ml of 98% sulphuric acid is kept open.
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उत्तर
When 100ml of 98% sulphuric acid is kept in open it absorbs water vapours from atmosphere and its level goes up.
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संबंधित प्रश्न
Give reasons for the following:
Sulphuric acid forms two types of salts with NaOH.
Give reason for the following:
Red brown vapours are produced when concentrated sulphuric acid is added to hydrogen bromide.
Give reasons for the following:
A piece of wood becomes black when concentrated sulphuric acid is poured on it.
Give reasons for the following:
Brisk effervescence is seen when oil of vitriol is added to sodium carbonate.
Distinguish between the following pairs of compounds using the reagent given in the bracket.
Ferrous sulphate solution and ferric sulphate solution. (Using sodium hydroxide solution)
Give examples of the use of sulphuric acid as
An electrolyte in everyday use
Name two other acids other than sulphuric acid, which can be prepared by using sulphuric acid.
A, B, C and D summarise the properties of sulphuric acid depending on whether it is dilute or concentrated.
A = Typical acid property
B = Non-Volatile acid
C = Oxidising agent
D = Dehydrating agent
Choose the property (A, B, C or D) depending on which is relevant to each of the following :
(i) Preparation of hydrogen chloride gas
(ii) Preparation of copper sulphate from copper oxide
(iii) Action of cone, sulphuric acid on sulphur
Write a balanced chemical equation:
When hot and concentrated sulphuric acid reacts with the copper.
The following is the typical property of dilute acid. Complete it by inserting suitable words:
\[\ce{Base + Acid -> \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]
