CONCENTRATION OF AQUEOUS SOLUTION & STANDARD SOLUTION

6.5 Concentration of



aqueous solution





































































Oleh: CIKGU WAN INTAN SURAYA BINTI BASARUDDIN

SMK TANJONG RAMBUTAN

Concentration of a solution








• Is a measurement that


shows the quantity of

solute dissolved in a unit


volume of solution (in 1

dm³ solution)


• The higher the quantity


of solute, the higher the

concentration of the


solution.










• The quantity of solute dissolved

can be measured in gram or

mole


• The concentration of a solution

can be measured in:


❑g dm -3


❑mol dm -3








6.5.1 Concentration of aqueous solution
State the meaning of concentration of aqueous solution

CONCENTRATION



RELATIONSHIP BETWEEN



CONCENTRATION & MOLARITY


















x Molar mass
Molarity Concentration


-3
(mol dm ) (g dm )
-3
÷ Molar mass














































6.5.2 Concentration of aqueous solution
Solve numerical problems involving of concentration of solution

6.5.2 Concentration of aqueous solution
Solve numerical problems involving of concentration of solution

6.5.2 Concentration of aqueous solution
Solve numerical problems involving of concentration of solution

6.5.2 Concentration of aqueous solution
Solve numerical problems involving of concentration of solution

6.5.2 Concentration of aqueous solution
Solve numerical problems involving of concentration of solution

6.5.2 Concentration of aqueous solution
Solve numerical problems involving of concentration of solution

6.5.2 Concentration of aqueous solution
Solve numerical problems involving of concentration of solution

6.5.2 Concentration of aqueous solution
Solve numerical problems involving of concentration of solution

6.6 STANDARD SOLUTION













































































6.6.1 Standard Solution
State the meaning of standard solution

• is a solution in which its concentration is


accurately known




 Standard solution are used to determine


the concentration of other elements














•In the preparation of standard


solutions, mass of solute and

volume of distilled water are


two parameters that have to


be measured accurately





























6.6.1 Standard Solution
State the meaning of standard solution

METHODS OF PREPARATION OF




STANDARD SOLUTIONS












Preparation of standard


solution from a solid















Preparation of standard solution by


diluting aqueous solution































6.6.2 Standard Solution
Describe the preparation of a standard solution through activity

Preparation of




standard solution from a solid






Weighing bottle Solid of sodium
Weighing
bottle carbonate Na CO 3
2
https://www.yo

utube.com/wat

ch?v=MeOAPb
MvubE&t=1s

Preparation of standard solution by




diluting aqueous solution







 Another method of preparing

DILUTION METHOD solutions of known

concentration is by dilution

method. This method involves
adding water to a concentrated
https://www.yout solution or known as stock

ube.com/watch? solution, to produce a more

v=L2t5UhZizns diluted solution












During dilution, water that is


added to the aqueous


solution will alter the

concentration of the solution


but it would not alter the

number of moles of solute


contained in the solution

Preparation of standard solution by




diluting aqueous solution

Preparation of standard solution by




diluting aqueous solution

CALCULATION INVOLVING STANDARD


SOLUTION & DILUTION








































































6.6.3 Standard Solution
Solve numerical problems involving preparation of standard solution and dilution