Chemical Bonding — Chemistry STD 10 — Question

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?

The metals of group 2 from top to bottom are: Be, Mg, Ca, Sr, Ba. Which of these metals will form ions most readily and why?

Give appropriate scientific reasons for the following statement :
The electrical conductivity of acetic acid is less in comparision to the electrical conductivity of dilute sulphuric acid at a given concentration.

Draw the electron dot diagram and structure of:
magnesium chloride

Which feature of the ammonia molecule leads to the formation of the ammonium ion when ammonia dissolves in water?

Define the term : Avogadro's number

The following statement is correct only under certain conditions. Rewrite the statement including the appropriate condition(s) and underline it in your answer.
Copper and nitric acid react together to produce nitrogen dioxide.

(i) Draw a labelled diagram for the apparatus used to electroplate a spoon with silver.
(ii) What are the ionic reactions that take place :
(1) at the anode (2) at the cathode?

Write the balanced equations to convert:
(a) Ethanol to ethene
(b) Ethene to ethanol