This document contains questions about various chemistry concepts including: - Ions present in potassium iodide solutions and products formed during electrolysis. - Names of industrial processes involving raw materials like ammonia and sulfuric acid. - Differences between ionic and covalent bonding by referring to physical properties. - Designing an experiment to investigate the relationship between pH and molarity of an acid. - Properties of elements including electron configuration and reactivity.

1. 2.(a)Name all the ions present in KI
(b)Name the ions that selected at X and Y
Electrode X:
Electrode Y:
(c)Name the product formed at Y and equation
Product:
Equation:
(d)experiment is repeated by replacing with concentrated potassium iodide solution
(e) name the ions that selected at
Electrode X:
Electrode Y:
(II) Name the products formed at X and state the confirmatory test
3.(a)process X, Y are industrial processes. What are the names of each of these processes?
X:
Y:
(b)what are the 3 raw material needed for process X?
(c)(I)write a balanced equation for reaction P
(II) use answer in 3(I) to determine the number of moles of H2SO4 and the number of moles ammonia used to produce 1 mol of ammonium sulphate
Sulpuric acid: ____ mol
Ammonia: ____ mol
(d)state one use of ammonium sulphate
5.(a)Carbon and sodium react with oxygen to form different compounds.one of them is an ionic compound while the other one is covalent
compound.By using suitable compounds formed between them
Explain HOW : (I) ionic bond is formed
(II)covalent compound is formed
(b)(I) state differences between ionic and covalent compound by referring to 3 different physical properties
(II)by referring to one of the properties stated in bI, explain the differences found in the compound.
6. You are provided with concentration at 0.1, 0.01,0.001,0.0001 mol/dm-3, and pH meter and 250 cm3 beakers. You are needed to plan an experiment to investigate the relationship
between pH value and molarities of an acid.
(a)Problem statement
(b)hypothesis
(c)variables
(d)procedures
(e)tabulation of data
1. proton number
P 20
Q 12
a)(I)electron arrangement of P
(II)state the group and period of P
b)(I)explain why P is more reactive than Q
(II)write formula of the compound between – P and oxygen, Q and oxygen