Chemistry
Distinguish between the following as directed.
(a) Sodium carbonate and sodium sulphate using H2SO4.
(b) Lead (II) oxide and zinc oxide using H2SO4.
Answer
(a) Sodium carbonate reacts with sulphuric acid and gives white coloured sodium sulphate along with water and carbon dioxide.
Na2CO3 + H2SO4 ⟶ Na2SO4 + H2O + CO2
On the other hand sodium sulphate reacts with sulphuric acid and gives colourless sodium hydrogen sulphate. Hence, the two can be distinguished.
Na2SO4 + H2SO4 ⟶ 2NaHSO4
(b) Lead oxide reacts with sulphuric acid and gives white coloured lead sulphate along with water.
PbO + H2SO4 ⟶ PbSO4 + H2O
On the other hand zinc oxide reacts with sulphuric acid and gives colourless zinc sulphate along with water.
ZnO + H2SO4 ⟶ ZnSO4 + H2O
Related Questions
(a) Draw the structural formula for the following
- Methoxymethane
- 2-methyl propan-2-ol
- Ethanol
(b) Name the following organic compounds in IUPAC system.
Draw the electron dot structure for the following.
(a) NH4+
(b) CaO
Name the ions present in
(a) alumina
(b) fluorspar
(c) sulphuric acid
An element 'Y' is in II period and group 16 of the periodic table.
Answer the following questions:
(a) Is it a metal or a non-metal?
(b) Write the valence electrons present in the element Y.
(c) What is its valency?