Tutorial video hybridisation HOCO2- ion

 PAST YEAR QUESTION CHAPTER 4 (2017/2018)
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Assalamualaikum.. 

So today I want to share zappar code to scan with using zappar application. So you can explore ebook, video, simple notes and quiz for the topic Molecular Geometry. Its easy... just try.. Sharing is caring

Pertandingan Inovasi Pendidikan PriSM'19

IPDA.. menimba ilmu dan pengetahuan dengan join projek inovasi sambil present projek sendiri.. 

Kali ni bawa projek bernama R-Chem. R-Chem adalah satu inovasi bahan PdP dalam topik Molecular geometry yang menerapkan blended learning, papan permainan, AR dan pembelajaran menggunakan model orbital yg dicetak dari 3D printer. 

Inovasi bahan PdP ini dibina untuk mengatasi masalah pelajar dalam membayangkan model atom dalam bentuk 3D

Hasil usaha kumpulan kami membuahkan pingat Perak.. Alhamdulilah

Minggu Lab test, memang sangat busy.. Hari ni Hari Anugerah Cemerlang Airish, Ibu sibuk sangat dengan komitmen pemantau kelas Lab dan kelas sendiri.. Jadi tak dapatla tengok Airish terima anugerah dan Akasya main kompang.. Tq Ayah tolong temankan Airish.. tp ibu sangat bangga dengan adik tau.. Tahniah adik...

Airish dan kawan-kawanya

Tengah dok kusyuk dalam lab, ex students bath 2017/2018 pulak datang.. memang rapat dengan diorang ni dulu..mana tak nya semua sapu bersih dari ajar kuliah, tuto dan lab dengan diorang.. lagipun diorang ni budak pandai dan rajin dalam kelas...pensyarah mana yang tak suka kan.

from left: fiza, me, mimi and balkis

seronok sangat jumpa diorang ni..Dua orang bdk Jitra dekat jerlah kan.. Tapi Mimi ni from Ganu jauh-jauh sanggup naik bas ke Kedah.. siap bawa ole-ole from Ganu lagi.. tq ye Mimi.. Paper beg pun cantik.. ada banyak keropok Ganu dalam tu...

Pastu sambung kelas balik... Misi nak buat test run untuk projek game board R-Chem.. esok baru ni dipamerkan di Pertandingan Inovasi Darulaman Peringkat Kebangsaan.. Semoga R-Chem mendapat pilihan dihati juri

Abis je kelas terus ke kebun durian kawan sekerja.. best sangat dapat masuk kebun buah kawan.. apa lagi ni la peluang makan durian banyak-banyak tanpa roomate.. tq Kak Ram payung durian hari ni

Walaupun penat tapi hari yang indah ini, banyak yang manis-manis harus disimpan sebagai kenangan yang terindah

Molecular geometry : Video stimulation

https://phet.colorado.edu/sims/html/molecule-shapes/latest/molecule-shapes_en.html

the best stimulation... check it out

Let's learn to draw Lewis structure for Iodine tetrachloride

5 Basic shape of molecular geometry

How to solve this question???

Lets try to solve this type of question: (example of the calculation)

5 ml of Oxalic acid (H₂C₂O₄) stock solution is pipet to prepared 250mL oxalic acid in the volumetric flask. 25 mL of the H₂C₂O₄ solution is used to titrate with 0.2M NaOH solution. Volume of NaOH used in the titration is as follows:

Burette Reading (mL)	Gross	I	II	III
Final	41.70	25.30	30.70	27.80
Initial	16.00	00.00	6.00	2.50
Volume titrant (NaOH) used

   

•              Calculate the molarity of dilute H₂C₂O₄
•               Calculate the molarity of stock solution H₂C₂O₄

Solution:
Calculate molarity of dilute solution:
* we can calculate molarity of dilute solution from titration process between acid and base
* Write and balance the equation between acid and base

H2C2O4  + 2 NaOH ------->  Na2C2O4   +  2H2O

*Calculate average volume of NaOH used in the experiment (exclude gross reading)
* use formula to calculate Molarity

MaVa  =  1
MbVb     2
(Ma) (25)   =  1
(0.2 (25.10)    2
Ma (dilute)  = 0.1004M

Calculate Molarity of Stock Solution:
 M1V1 = M2V2

(M1) (5) = (0.1004) (250)
 M1(stock) = 5.02M

Preparation dilute solution

How to prepare dilute solution?

1. Pipette desire amount of stock solution.
2. Add distilled water to the beaker.
3. Transfer the stock solution into the beaker containing the distilled water
4. Stir solution using glass rod.
5. Transfer the solution to the volumetric flask. Rinse the beaker and transfer to volumetric flask.
6. Add distilled water to the volumetric flask up to the calibrated mark. Stopper and shake the volumetric flask to obtain homogenous solution.
7. The dilute solution is ready for titration.

Titration tips

Practical test is around the corner.. This is a technique of manipulative skill that we need to practise... For right handed person, stopcock is controlled using left hand while the conical flask is swirled continuosly using right hand (or vice versa if left handed).. Rinse the wall of conical flask with distilled water...