bismillahirrahmanirrahim
hurm...sementara menunggu caramel apple siap,
aku rse ade baiknya aku manfaatkan blog utk improve akademik aku
atau lebih spesifik lagi, subjek kimia, yg markahnye sipi2 je sem lpas
tambahan plak, lpas cny, ade test kimia
jd, terimalah...
(baca dgn nada org panggil artis wt psembahan)
secara langsung dari makmal kimia a-level intec
KIMIA??!!
hurm... ni ialah gambar reaction iodine with sodium thiosulfate (Na2S2O3)
the blue-black precipitate is mixture of iodine with starch indicator
tujuan ltak starch ialah
after that, the clear solution is the part
when the iodine is mixed with sodium thiosulfate
where the reaction will form sodium iodide and sodium tetrathionate
or...
I2 + Na2S2O3 > NaI + Na2S4O6
jd, eksperimen ni sbnanye nk tgk oxidation of metal and non-metallic elements
by halogen
dlm kes ni, iodine oxidise S from +2 kpd +2 setengah
(nampak cm klaka an charge +2 setengah tp terimalah hakikatnye)
komen sdiri: mende ni bapak sumpah best gler!!!
mase mula2 ltak iodin ngn starch, gelap je
pastu ble ltak sodium thiosulfat tuh, ltak setitik je,
xgoncang xape, tetibe je, lame2, die jd clear sdiri, mmg SMART!!!
ni plak adelah eksperimen to show that a higher halogen can displace its lower halide
which means F2 can replace Cl-
Cl2 can replace Br-
Br2 can replace I-
dlm kes ni, Cl2 replace I- from KI
so, productnye ialah KCl and I2
lpas reaction, solution is added with cyclohexane (organic solvent)
jd, yg purple ialah I2 dlm organic solvent
while yg brown kt bawah ialah I2 in water (dlm exam tulis pale brown)
komen: bese r, just kaler je yg wt aku teruja, huhu
aku tau ni adelah reaction Fe+2 ngn halogen
tp, aku xigt mne satu Cl2, Br2 dan I2
kalau xsilap,
dr kiri, Br, Cl, dan I
ni plak sbnanye juz reaction when Pb(NO3)2 is mixed with KI
the product actually is yellow precipitate
which is the color of PbI2 to show the presence of I-
tp sbb aku ni suke men2 ngn end product,
aku campur air sampe jd 3 layers of varying yellow solution
lawa2~~~
ni plak adelah HI gas
yg terhasil ble I- gas react dgn conc. H2SO4 dan pastu dipanaskan
eksperimen ni pun utk uji the presence of I-
yg ni best sbb gas ni bkaler an?
ye r, kt shah alam ni asek2 gas kaler itam a.k.a. asap kenderaan je
hurm, asap ni bau mmg menarik r,
bau jam ban, siyes
ni plak ialah cyclohexane, ek? haha, xdelah
ni ialah.....
hurm, ape yg aku cbe nk kongsi skali kt sini
dlm kita wt eksperimen pnah x kita perhatikan
knape mula2 mende tu kaler camtu,
pastu boley tukar kaler bila campur ngn menatang ni?
kalau tgk, cth mudah, Fe+2, kaler ijau
tp bila hilang satu elektron, jd Fe+3, dh jd kaler coklat
kita spatutnye rase kagum r
cmne Allah jdkan,
sbb ilang satu elektron yg kecil sekecik2nye tu,
mende tu dh tukar kaler, dh tukar sifat dan mcm2 r
subhanallah~
k r, apple caramel pun da masak
da serve da pon
(gler 2 jam aku wat post ni!!! gler3!!!)
kdg2 bile terlalu sibuk, letih, kne gak bg reward kt diri kite
kne gak rehat cm kucing ni, comel je ble tdo
cumilcumilcumilcumilcumilcumilcumil~~~
till then,
assalamualaikum
"aku bce buku utk siapkan post ni. GLER AHHH!!!!"
