Advertisements
Advertisements
Question
Give reasons for the following:
Sulphuric acid forms two types of salts with NaOH.
Advertisements
Solution
Sulphuric acid generates two types of salts with NaOH due to its dibasic nature, producing two hydronium ions per molecule when ionised in water.
\[\ce{NaOH + H2SO4 → \underset{sodium hydrogen sulphate}{NaHSO4} + H2O}\]
\[\ce{2NaOH + H2SO4 -> \underset{Sodium sulphate}{Na2SO4} + 2H2O}\]
RELATED QUESTIONS
Copy and complete the following table:
| Column 1 | Column 2 | Column 3 |
| Substance reacted with acid | Dilute or concentrated acid | Gas |
| Hydrogen | ||
| Carbon dioxide | ||
| Only chlorine |
How does sulphuric acid occur in nature?
What would you observe in the following case?
Sulphur trioxide is dissolved in water on a large scale.
What would you observe in the following case?
100ml of 98% sulphuric acid is kept open.
Fill in the blank with appropriate word/words :
For the reaction SO2 + O2⇌ SO3 + Heat, the favourable conditions are _________ and __________.
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
Some properties of sulphuric acid are listed below. Choose the property A, B, C or D which is responsible for the reaction (a) to (e). Some properties may be repeated.
A. Acid
B. Dehydrating agent
C. Non-volatile acid
D. Oxidizing agent
(a) \[\ce{C12H22O11 + nH2SO4 -> 12C + 11H2O + nH2SO4}\]
(b) \[\ce{S + 2H2SO4 -> 3SO2 + 2H2O}\]
(c) \[\ce{NaCl + 2H2SO4 -> NaHSO4 + HCl}\]
(d) \[\ce{CuO + 2H2SO4 -> CuSO4 + H2O}\]
(e) \[\ce{Na2CO3 + H2SO4 -> Na2SO4 + H2O + CO2}\]
Write a balanced chemical equation:
When hot and concentrated sulphuric acid reacts with the sugar.
The following is the typical property of dilute acid. Complete it by inserting suitable words:
\[\ce{Active metal + Acid -> \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]
The following is the typical property of dilute acid. Complete it by inserting suitable words:
\[\ce{Sulphide + Acid -> \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]
