Worksheet 6.2 the Factor of Specific Electrodes
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Transcript of Worksheet 6.2 the Factor of Specific Electrodes
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8/12/2019 Worksheet 6.2 the Factor of Specific Electrodes
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Worksheet No. 6.2
Form 4 Topic 6 6.2 Type of electrode
Name : Paper 3 (Written Practical Test)
1.
Referring to t e statement a!o"e# plan one la!oratory e$periment toin"estigate t e effect of specific electrodes on t e electrolytic process of an
electrolysis. %o&r e$periment s o&ld incl&de t e follo'ing:Merujuk kepada pernyataan di atas, rancangkan satu eksperimen untukmenyiasat kesan penggunaan elektrod yang tertentu dalam proses elektrolisismerangkumi perkara-perkara berikut :
(a) im of t e e$periment Tujuan eksperimen 2 *(!) ll t e "aria!les Semua pembolehubah 3 *(c) +tatement of t e ypot esis Pernyataan hipotesis 3 *(d) ,ist of material and apparat&s Senarai bahan dan radas 3 *(e) Proced&re Prosedur 3 *(f) Ta!&lation of data Penjadualan data 3 *
Write yo&r ans'ers in t e spaces pro"ided.*(a) Pro!lem statement -
Pernyataan masalah :
(!)
( ll t e "aria!les)anip&lated /aria!le -
Pembolehubah dimanipulasi :Responding /aria!le -Pembolehubah bergerak balas:0ontrol /aria!le -Pembolehubah dimalarkan :
(c) +tatement of t e ypot esis -
Pernyataan hipotesis :
(d) aterial - Bahan :
pparat&s - Radas :(e) Proced&re - Prosedur :
T e &se of car!on electrodes in t e electrolysis of an electrolyte ofcopper( ) s&lp ate# 0&+ sol&tion may yield different prod&cts ' en t eyare replaced 'it copper electrods.
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(f) Ta!&lation of data -Penjadualan data:
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+&ggested ans'er
(a) Pro!lem statement :Pernyataan masalah:
4oes t e type of electrodes affect t e type of prod&cts formed d&ringt e electrolysis 5
Adakah jenis elektrod mempengaruhi hasil elekrolisis
(!)
( ll t e "aria!les)anip&lated /aria!le :
Pembolehubahdimanipulasi :
Types of electrodes!enis elektrod
Responding /aria!le:Pembolehubahbergerak balas :
Types of prod&cts at t e anode"asil di anod
0ontrol /aria!le :Pembolehubahdimalarkan :
Type and concentration of electrolyte!enis dan kepekatan elektrolit
(c)(c)
+tatement of t eypot esis :Pernyataan hipotesis :
W en copper electrodes are &sed instead of car!on electrods# t e typesof prod&cts formed at t e anode and t e cat ode are different. Apabila elektrod kuprum digunakan selain elektrod karbon, hasil yangterbentuk di anod dan di katod adalah berbe#a$
(d) aterial :Bahan :
pparat&s :Radas :
.1 mol dm 73 copper( ) s&lp ate# 0&+ sol&tion%$& mol dm-' larutan kuprum())* sul+at$
8atteries# car!on electrodes# copper electrodes# connecting 'ires 'itcrocodile clips# ammeter# electrolytic cell# electronic !alance# sandpaper'ooden splinter# lig ter.Bateri, elektrod karbon, elektrod kuprum, ayar penyambung dengan
klip buaya, ammeter, sel elektrolisis, neraca elektronik, kertas pasirkayu uji, pemetik api (e) Proced&re :
Prosedur :
1. 0lean t e car!on electrodes 'it sandpaper Weig t e anode and cat ode indi"id&ally# and record yo&rreadings.
2. Po&r t e copper( ) s&lp ate 0&+ sol&tion into t e electrolyticell 'it car!on electrodes
3. 0onnect t e !atteries and ammeter 'it electrolytic cell &singconnecting 'ire.
. T&rn on t e s'itc for 19 min&tes9. Ta e o&t t e anode# 'as it# dry it and t en 'eig it &sing an
electronic !alance6. Repeat steps 1 to ; &sing copper electrodes to replace car!onelectrodes
;. Record all reading and o!ser"ations.
&$ osok elektrod karbon dengan kertas pasir .$ Timbang anod dan katod secara berasingan dan rekodkan
bacaan'$ Tuangkan larutan kuprum())*sul+at, /uS0 1 ke dalam sel
Worksheet No. 6.2
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elektrolisis yang menggunakan elektrod karbon1$ Sambungkan bateri dan ammeter dengan sel elektrolisis
menggunakan ayar penyambung 2$ "idupkan suis selama &2 minit 3$ 4eluarkan anod, cuci dan keringkan$Timbangkan menggunakan
neraca elektrik$5$ 6lang langkah & hingga 5 menggunakan elektrod kuprum untuk
menggantikan elektrod karbon7$ Rekodkan semua bacaan dan pemerhatian
(f) Ta!&lation of data :Penjadualan data: