61.

Give chemical equation for:

The preparation of ethyne from 1,2 dibromoethane.

state how the following conversion can be carried out:

Ethyl chloride to ethyl alcohol 

State how the following conversion can be carried out:

Ethyl chloride to ethene

State how the following conversion can be carried out:

Ethene to ethyl alcohol.

State how the following conversion can be carried out:

ethyl alcohol to ethene

Define isomerism.

Give the IUPAC name of the isomer C₄H₁₀ which has a branched chain.

Consider the selection of the periodic table given below:

Note: IN this table B does not represent boron;

C does not represent Carbon

F does not represent fluorine

H does not represent Hydrogen

K does not represent potassium.

You must see the position of the element in the periodic table.

Some elements are given in their own symbol and position in the periodic table, while  others are shown with a letter. With reference to the table;

i)    Which is the most electronegative?

ii)    How many valence electrons are present G?

iii)  Write the formula of the compound between B and H.

iv) In the compound formed between F and J, what type of bond will be formed? Covalent

v) Draw the electron dot structure for the compound formed between C and K : diagram

A gaseous compound of nitrogen and hydrogen contains 12.5% hydrogen by mass. Find the molecular formula of the compound if its relative molecular mass is 37[N=14, H=1]

A metal article is to be electroplated  with silver. The  electrolyte selected is sodium Argento cyanide.

i) what kind of salt is sodium Argento cyanide?

ii) why is it preferred to silver nitrate as an electrolyte.

iii)state one condition to ensure that the deposit is smooth, firm and long lasting.

iv)write the reaction taking place at the cathode.

v) write the reaction taking place at the anode,