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HASIL PENGAMATAN (RESULT)

Cara Kerja (Steps) Pengamatan (Observation) Kesimpulan (Reactio

1 -Siapkan: Logam Mg !ml "Cl #M

 Logam Mg !ml "Cl $M Logam Mg !ml "Cl !M-Masukkan masing-masing campuranke %alam tabung reaksi (tabung#&$&!)-'mbil stopatc-Catat aktun*a masing-masingingga logam Mg abis bereaksi

(ti%ak a%a gelembung lagi)-Prepare:  Magnesium metal and 3 mL of HCl1M  Magnesium metal and 3 mL of HCl2M  Magnesium metal and 3 mL of HCl3M- Put each mixture in a test tube (test 

tube 123!-"a#e $our stop%atch and count thetime-&rite do%n ho% long Magnesiummetal 'nished reacting (or if there isno bubbles!

-Pa%a tabung reaksi pertama&*ang berisi ! ml "Cl #M& logam

Mg abis bereaksi setela !#menit #+ %etik-Pa%a tabung reaksi ke%ua& *angberisi !ml "Cl $M& logam Mgabis bereaksi setela #, %etik-Pa%a tabung reaksi ketiga& *angberisi ! ml "Cl !M& logam Mgabis bereaksi setela %etik

-t the 'rst test tube %hichcontains 3 mL of HCl 1mMagnesium metals 'nishedreacting after 31 minutes and 1)seconds*- t the second test tube %hichcontains 3 mL of HCl 2MMagnesium metals 'nished

reacting after 1+ seconds- t the third test tube %hichcontains 3 mL of HCl 3MMagnesium metals 'nishedreacting after , seconds*

 -Konsentrasi .at terlarumempengarui besarn*

reaksi-Semakin besar kosentrn*a maka reaksi berlanlebi cepat& %an laju reasemakin besar/

-"he solutals concentrain.uences reaction rate

-"he bigger concentratithe faster reactions doand reaction rate becobigger*

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Pengaru suu tera%ap laju reaksi-Siapkan #+ mL 0a$S$O! +&$ M %anukur aaln*a %engan termometer-Campurkan 0a$S$O! +&$ M %engan ,mL "Cl $M %alam kelas kimia-Letakkan tan%a kertas silang %ibaan*a %an catat aktun*aingga tan%a silangn*a ti%akkeliatan-Siapkan #+ mL 0a$S$O! +&$ Mpanaskan ingga kenaikan suu #+O C %ari suu aal& lalu angkat

-Reaksikan %engan #+ mL "Cl $M%an letakkan tan%a silang%ibaan*a-Catat aktun*a ingga tan%a silangti%ak keliatan

"emperatures e/ect for reactionrate:-Prepare 1) mL 0a223 )2 M andmeasure its initial temperature

Percobaan 1:-Suu aal #+ mL 0a$S$O! +&$M a%ala !!o C-#+ mL 0a$S$O! +&$ M setela%icampurkan %engan , mL "Cl

$M& arnan*a beruba %aribening menja%i keru (puti)/"ingga tan%a 2 pa%a kertasti%ak terliat lagi& setela #menit !! %etik/Percobaan 11:-Setela %ipanaskan&suu aal#+ mL 0a$S$O! +&$ M a%ala3!o C-#+ mL 0a$S$O! +&$ M setela%icampurkan %engan , mL "Cl$M& arnan*a beruba %aribening menja%i keru (puti)/"ingga tan%a 2 pa%a kertasti%ak terliat lagi& setela $$%etik

xperiment 4:

-Suu .at terlarutberpengaru tera%abesarn*a laju reaksi

-Semakin besar suumaka laju reaksi sembesar

-"emperature in.uenho% big reaction rat -"he hotter substancthe faster it 'nishedreacting* o reactiorate is bigger 

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-Mix 1) mL 0a223 )2 M %ith + mLHCl 2M in glass ba#er -Put paper %ith 5 sign under theglass and count the time until thatsign dissappear 

-Prepare 1) mL 0a223 ) 2 M heat it* 6ntil its temperature increasing1) C*-Mix 1) mL 0a223 )2 M %ith + mLHCl 2M in glass ba#er -Put paper %ith 5 sign under theglass and count the time until thatsign dissappear 

 

Pengaru Luas permukaan tera%aplaju reaksi:'mbil # sen%ok CaCO! serbuk ! ml"CL $M'mbil # sen%ok CaCO! butiran ! ml

-4nitial temperature of 1) mL0a223 )2 M is 33o C-fter being mixed %ith + mL HCl2M its color snores* nd the 5sign become dissappear after 1

minute 33 secondsxperiment 44:-4nitial temperature of 1) mL0a223 )2 M is 73o C-fter being mixed %ith + mL HCl2M its color snores* nd the 5sign become dissappear after 22seconds* 8aster*

 

Percobaan 1:-# sen%ok CaCO! serbuk abis beraksi%engan ! mL "Cl $M selama # menit!+ %etikPercobaan 1:-# sen%ok CaCO! butiran abis

-Luas permukaan .at termempengarui laju rea-Semakin besar luaspermukaan .at& maka lareaksi semakin besar& k

reaksi menja%i lebi cep

-ubstance surface in.uthe reaction rate-"he bigger surface is t bigger reaction rate is

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"CL $M'mati %an catat aktun*a

ubstance surfaces e/ect forreaction rate:

-Prepare 1 spoon of CaC3 po%derand 1 spoon of CaC3 pieces*-Mix them separatedl$ %ith 3 mL HCl2M

Pengaru Katalis tera%ap laju

reaksi

beraksi %engan ! mL "Cl $M selama 4menit ,! %etik

xperiment 4:-1 spoon of CaC3 po%der

'nished react %ith 3 mL HCl 2Min 1 minutes and 3) secondsxperiment 4:-1 spoon of CaC3 pieces'nished react %ith 3 mL HCl 2Min 9 minutes and +3 seconds

 

-! ml "$O$ ,5 # ml 6eCl! +&# M 7erlangsung lebi cepat

-Katalis %apatmempercepat terja%ireaksi/ Karena katalis%apat memperkecil

energi aktivasi-Maka laju reaksisemakin besar-Catal$st can ma#eraction happen fasteecause it can decrethe acti;ation energ-o the reaction rate

bigger 

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! ml "$O$ ,5 # ml 6eCl! +&# M! ml "$O$ ,5 # ml 0aCl +&# M'mati %an ban%ingkan mana*ang lebi cepat

-Catal$st in.uences:-Prepare: 3 ml H22 +< = 1 ml 8eCl3 )1M 3 ml H22 +< = 1 ml 0aCl )1 M-bser;e and compare %hichone that react faster>

--3 ml H22 +< = 1 ml 8eCl3 )1 M4s react faster than 3 ml H22 +< = 1 ml 0aCl )1 M

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• KESIMPULAN (CONCLUSION)

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