Report of titration of HCl and NaOH solution :)

Aim : To find the end point in the titration of hydrochloric acid, HCl and sodium hydroxide, NaOH solution using a phenolphthalein as an indicator.

Apparatus : Burette, 25cm3 pipette, pipette filler, retort stand and clamp, white tile and 250cm3 conical flask.

Materials : 0.1 mol dm-3 hydrochloric acid, HCl, 0.1 mol dm-3 sodium hydroxide, NaOH solution and phenolphthalein.

Procedure :

• The students of 4 Al-Razi was asked to go to the Chemistry lab on Wednesday , 14 Sept 2011 by Puan Fauzah .
• They walked politely and very excited to do the experiment .
• After getting Puan Fauzah's permissions , they started to rinse the apparatus used in the experiment . In the first rinse , they used the pipe water .
• For the second rinse , they used distilled water .
• After that, they rinsed the burette using the HCl to prevent the water droplet from diluting the acid.
• Next, they measured the NaOH solution using pipette and put it into the conical flask .
• 3 drops of phenolphthalein was dropped until the NaOH solution changes colour from colourless to pink .
• They start the titration process with dropping the HCl into the conical flask while shaking the conical flask slowly until the solution changes colour from pink to colourless .
• They stopped dropping the HCl when the solution turned to colourless and measured the HCl volume .
• hahh . tak kuasa den nak berspeaking lg . berbelit lidah nak menyebut . jadi , selepas kami berlima ( Rina , Diana , Bila , Piqah & Tasha ) bertungkus lumus menjadi scientist sambilan dan Tasha Superb sebagai penari dangdut kelas atasan , eksperimen tu gagal . volume HCl tak mencapai 25cm3 . Puan Fauzah suruh buat lg .
• Kali ni dgn konfidennya den menitiskan LIMA titis phenolphthalein dan mengulangi eksperimen itu .
• Semasa den menggoncangkan conical flask ala ala lagu dangdut ' Memori Daun Pisang ' tuh , Puan Fauzah pun dtg lalu berkata ,

" nak jadi scientist ni , kena byk bersabar "

Bila Nisa menyampuk , ' dgr tuh Diana , kena sabar '

sambung Puan Fauzah ,

" kuat sikit goncang tu . ikut keselesaan tgn . awk tak makan pg ka ? "

'sy tak makan pg td cikgu , puasa ' , innocently replied .

goncang punya goncang , solution pun tukarlah jd colourless .

tp still gagal lg . haih .

' WEH BUAT BALIK . FAILED =='

• kali ketiga nih , masing-2 fokus . ukur tepat tepat . takmau failed lg . okeh , turn Bila pulak goncang-2 .

' wehh kalau dah dkt 15cm3 bgtau aku tau ' , kata si budak Batu Pahat .

' orait ! ' , budak Taman U membalas .

' wehh dah dah benti benti dah tuka colourless . ukur cepat ukur! '

' 26.20cm3 '

' ARGHHHHH APESAL TAK DAPAT LAGI NIH ' , geram =.=

' cepat cepat tambah HCl dlm burette tu sblm ckgu dtg ' , kata si Superb .

' Rina , Diana cepattt ' , si bdk BP bersuara .

' CIKGUUUU , BERJAYAA ' , * masing masing senyum smpai ke telinga

' awak dpt berapa ? '

' 25.20 cikgu '

' td awal-2 HCl guna berapa ? '

' 1.00cm3 '

' ehh itu dah kurang bacaannya , gagal lg la experiment awak ni . kalau dah ditolak , bacaan awak akan jd 24.20cm3 sahaja '

' ehh tak tak . sy salah baca . dah betul dah ckgu . 25cm3 ' .

* sumpah masing masing cover gelak *

' yaka ? tahniah lah dah berjaya '

' WEHH BERAGAK LA KALAU NAK MENIPU PUN . HADOYAII ' , bengang =='

Precautions :

• Berlaku jujurlah sewaktu melakukan eskperimen . Sesungguhnya tak berkat kalau MENIPU . Tak payah nak tambah tambah kalau bacaan tu tak cukup .
• FOKUS . jgn main-2 dlm lab . nt adee yang basah lepas tuh kena jd makcik cleaner dlm lab Chemist tuh . ahaaaaaaaa * sape faham tuh diam-2 je * JANGAN LAA GELAK .

Conclusion :

SAME AS THE PRECAUTIONS, DON'T YOU EVER TRY TO LIE WHEN DOING THE EXPERIMENT .

opss silap .

the end point in the titration of hydrochloric acid, HCl and sodium hydroxide,NaOH solution can be determine by using a phenolphthalein as an indicator.

tu hah conclusion sebenar utk experiment nih .

HOHO . aku sarankan takyah baca lah post nih . tak faham punyalahh .

So , HAPPY HOLIDAY FRENS :)