Analytical Chemistry Uses of Ammonium Hydroxide and Sodium Hydroxide — Chemistry STD 10 — Question

What can you say about the pH of a solution that liberates carbon dioxide from sodium carbonate?

Methane is a greenhouse gas. comment.

Explain why is the basicity of acetic acid is one, and the acidity of magnesium hydroxide is 2.

State one appropriate observation of the following:
A few drops of dilute hydrochloric acid are added to silver nitrate solution, followed by the addition of ammonium hydroxide solution.

Ammonia is manufactured by Haber Process.
Under what conditions do the reactants combine to form ammonia? Give a balanced equation for the reaction.

(a) What do you understand by the term roasting of ore?
(b) What is the importance of roasting in the extraction of metals?

Give reason for the following:
Concentrated sulphuric acid should not be added to oxalic acid or formic acid in the open laboratory.

LPG stand for liquefied petroleum gas. Varieties of LPG are marketed including a mixture of propane (60%) and butane (40%). If 10 litre of this mixture is burnt, find the total volume of carbon dioxide gas added to the atmosphere. Combustion reactions can be represented as:
C₃H₂(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(g)
2C₄H₁₀(g) + 13O₂(g) → 8CO₂(g) + 10H₂O(g)