Acids, Bases and Salts — Chemistry STD 10 — Question

Explain the following:
A solution of cane sugar does not conduct electricity, but a solution of solution of sodium chloride is a good conductor.

Propane burns in air according to the following equation :
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O.
What volume of propane is consumed on using 1000 cm³ of air, considering only 20% of air contains oxygen?

Aluminium is extracted from its chief ore bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Write an equation for the reaction which takes place at the anode during the extraction of aluminium by the electrolytic process.

How will you carry out the following conversions?
Ethene to acetic acid

Give reasons for Aqueous solution of ammonia conducts electricity.

Name the main constituent metal in the following alloy:
Stainless steel

Classify the following substances under three headings:
(a) Strong electrolytes (b) weak electrolytes ( c) non- electrolytes
Acetic acid, ammonium chloride, ammonium hydroxide, carbon tetrachloride, dilute hydrochloric acid, sodium acetate, dilute sulphuric acid.

When stating the volume of a gas, the pressure and temperature should also be given. Why?

Write balanced chemical equations for the following reactions:
(a) Ethane and oxygen in the presence of molybdenum oxide.
(b) Preparation of methane from anhydrous sodium ethanoate (sodium acetate).