Form 6 Students (Lower Six)- Practical 6

CHEMISTRY FOR STPM FORM 6

SCHOOL-BASED ASSESSMENT : PRACTICAL CHEMISTRY

EXPERIMENT 10: Ionic Equilibrium

The following result and answers are used as guidelines for calculation and solution for the question of (c) to (g)

Results:
(b) Record and complete your readings in the table below:

(d) Dilution decreases the concentration and hence increases the pH
(e) Dilution decreases the concentration and hence increases the degree of dissociation
(f) as shown in the table above.
(g) Dilution has no effect on Ka.













Precaution step:
the bulb of pH meter must be immersed in the buffer solution before next measurement is being carried out.
measurement of pH should can done from the most diluted acid to the most concentrated acid in order to attain more accurate reading of pH.

To My Form 6 Students: Mock paper 2 of Chemistry STPM from SMK Batu Lintang (with answers)

Click the link below to download the document
http://www.jenniefei.com/linktopdf.html

To My Form 4 Students: Learn Chemistry in Fun and Interactive way: Chemistry F4 - Learning the right formulae

Having problems to write the good formulae? Check out the exercise attachedby clicking the link below! More will be coming up soon....


http://docs.google.com/fileview?id=F.75697cfb-ac96-4875-a5cd-7f5bd6e13f08

Check this out, I will move all content of F4 Chemistry to this blog:

www.f4chemistry.blogspot.com

Learn Chemistry in Fun and Interactive way: Chemistry F4 - Learning the right formulae

Learn Chemistry in Fun and Interactive way: Chemistry F4 - Learning the right formulae

http://docs.google.com/fileview?id=F.5e84b8bf-018a-4340-b7bd-b2caa1be0d73

Chemistry F4 - Knowing When is the End Point of Titration

Titration of Hydrochloric acid aqueous and Sodium Hydroxide aqueous.
The conical flask on the left shows pink indicating alkaline solution of NaOH.
The conical flask on the right shows the light pink/ faint pink indicating end point of titration.

Fun and Interesting

More experiments related....

Salt - is defined to ionic compound where the hydrogen ions in an acid is replaced with metal ions or ammonium ions.

There are 3 types of salts which we classify as soluble salt which contain of sodium/potassium/ammonium ions (salt 1), soluble salt which is non-Na/K/NH4 (salt 2), and insoluble salt (salt 3).

The following pictures and video clips are taken while my students have their hands on experience in preparing salt.

Pictures of experiments....

saturated copper (II) nitrate solution ... waiting to be purified..

insoluble salt of lead (II) dichromate, height of precipitate increases with increase of volume of solution.

Some video clips.....

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SPM Chemistry

Want to learn more how you get the right formulae?