Acids, Bases and Salts — Chemistry STD 10 — Question

Name the charged particles which attract one another to form electrovalent compound?

Electron affinities of two elements A and B are given below:
A = 3.79 electron volts
B = 3.56 electron volts
Which of them will ionize more easily and why?

Give general formulae of monohydric alcohol?

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

One chemical test that would enable you to distinguish between the following pair of chemicals. Describe what happens with each chemical or state no visible reaction.
Sodium chloride solution and sodium nitrate solution.

In order to obtain one tone of aluminium, the following inputs are required:
4 tones of bauxite, 150 Kg of sodium hydroxide and 600 Kg of graphite.
The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (II) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
(i) Name the process used for purification of bauxite.
(ii) Write the equation to show the action of heat on aluminium hydroxide.

Define or explain the meaning of term 'molar volume'.

If an electrolyte is described as a strong electrolytewhat does this mean?

Answer the questions below relating your answers only to salts in the following list: Sodium chloride, anhydrous calcium chloride, copper sulphate-5-water?

1. What name is given to the water in the compound copper sulphate-5-water?
2. If copper sulphate-5-water is heated, anhydrous coppersulphate is formed. What is its colour?
3. By what means, other than healing, could you dehydrate copper sulphate-5-water and obtain anhydrous coppersulphate?
4. Which one of the salts in the given list is deliquescent?

How will you prepare the following from nitric acid?
Magnesium nitrate