How many grammes of NaOH(s) would be needed to produce 100.0 cm3 of a 0.20 mol dm-3 NaOH, (aq)? [NaOH = 40.0]

How many moles of copper would be deposited by passing 1 Faraday of electricity through a \(CuCl_2\) solution?

a. What is a transition element?

b. Consider the electron configuration of the following elements: A=2, 8,6; B=2,8,2; C=2,8,1, D=2,8,8
State the element which forms a: i. doubly charged cation; ii. soluble trioxocarbonate (IV).

c. Explain briefly why there is a general increase in the first ionization energies of the elements across the period in the periodic table.

d. Give two examples of an aliphatic compound

e. Explain briefly why alkanols are stronger bases than water.

f. State the major raw materials used in the Solvay process

g. What is geometric isomerism?

h. Give a reason why water gas is a better fuel than producer gas.

i. Define the term heat of combustion.

ji. State Faraday's second law of electrolysis

ii. Calculate the amount of silver deposited when 10920 coulombs of electricity is passed through a solution of a silver salt.
[IF = 96500 C mol-1]

a. In an experiment, 20.0 \(cm^3\) of a solution containing 4g/\(dm^3\) of sodium hydroxide was neutralized by 8.0 \(cm^3\) of dilute tetraoxosulphate (VI) acid: i. Write a balanced equation for the reaction;  ii. calculate the concentration of the acid in mol/ \(dm^3\)

bi. State two postulates of the Kinetic theory of gases which real gases do not obey

ii. Explain briefly why real gases do not obey the postulates stated in 2(b)(i).

c. Consider the following compound:

     Name the compound

 ii. name the two structural isomers of the compound; 

 iii. state the chemical process involved in the preparation of the compound from starch,

iv. write the chemical equation for the steps involved in the process in 2(c)(ii).

v. name two enzymes involved in the process in 2(c)(iii)

d. Explain briefly the term structural isomerism.

a. A compound contains 52.2% C, 13.1 % H and Oxygen only. The vapour density of the compound is 23.
    Determine i. its empirical formula; ii. its molecular formula,  [H=1.0, C=12.0, O= 16.0]

iii1). The compound reacts with sodium metal to produce hydrogen gas and when warmed with acidified \(KMnO_{4(aq)}\) gives a solution that turns from purple to colorless. It also forms a sweet-smelling liquid when heated with ethanoic acid  in the presence of concentrated \(H_2SO_4\)
 name the functional group present in the compound; iii2). draw the structural formula of the compound.

b. Outline the chemical equations for the production of ethanol from cooked cassava.

ci. Explain briefly why a piece of aluminum does not react with water.

ii. How can a pure sample of aluminum chloride crystals be prepared from aluminium

d. Describe how water can be separated from aqueous \(CuSO_4\)