Ordinary level 2025 Bamenda archdiocesan mock chemistry 2
Ordinary level 2025 Bamenda archdiocesan mock chemistry 2
Define electrolysis in series
( 1 mk)
b) Indicate on the diagram the
1) Battery
| ii) Direction of current flow c) What would you observe at the d) Show by means of an i) NaCl cell. anode during the electrolysis of sea water? equation, the reaction occurring at the anode of |
(link ) |
| (1 mk) |
ii) CuSO^ cell.
(2 mks)
e) A steady current of 0.8A was passed through the two cells for 1 hour 30 minutes
| , | 0 Calculate the quantity of electricity in coulombs used. ii) Calculate the volume of the gaseous product at the anode of NaCl cell. |
(1 mk)
(2mks)
iii) How many moles of gaseous molecules does this NaCl anode product represent at r.t.p?
(2 mks)
(Total = 10 mks)
SECTION B
ANSWER BOTH QUESTIONS IN THIS SECTION IN THE SPACES PROVIDED.
BOTH QUESTIONS CARRY EQUAL MARKS
6. a) i) What is a standard solution?
ii) Give the three main steps involve in the preparation of a standard solution of Na2COv
iii) Name OR draw the apparatus used in the preparation of a standard solution
(5mks)
