Praktikum kimia

contoh laporan praktek kimia

larutan elektron dan non elektron 

Praktikum kimia

                                     

                                       NAME    : SITA TUTI AWALIYAH

                                       CLASS   : X-6

INDRAMAYU LOCAL GOVERNMENT EDUCATION AGENCY

SENIOR HIGH SCHOOL  1 SINDANG

(in the process of internasional designated school )

JL  LETNAN M.T HARYONO SINDANG INDRAMAYU – WEST JAVA 45222

Pone number : (0234) 272089  fax: (0234) 275315 emil : smanegeri1_sindang@yahoo.co.id

websait :satusindang.co.cc

ACEDEMIC YEAR 2011/2012

=====================================

PRAKTIKUM KIMIA LARUTAN ELEKTROLIT DAN NON ELEKTROLIT

Tujuan : Mengamati Larutan Elektrolit dan Non Elektrolit

Dasar teori :

Teori Ion Svante Arrjenius menyatakan bahwa larutan elektrolitdapat menghantarkan listrik karena mengandung ion-ion yang dapat bergerak bebas.Ion-ion itulah yang menghantar arus listrik melalui larutan

Alat dan Bahan :

·         2 Batang Karbon

·         Power Suplly DC

·         kater

·         Kabel

·         penjepit buaya

·         Lampu

·         Larutan yang Di uji

·         Gelas Kimia

Cara Kerja :

·         Pertama Siapkan alat dan bahan,susun rangkaian penguji larutan.

·         Kedua ,Sambungkan kabel dengan lampu

·         Kemudian sambungkan dengan batang karbon yang pertama,dan satu potong kabel lagi   untuk batang karbon yang kedua.

·         2 potong kabel tersebut sambungkan ke Power Suplly DC

·         Siapkan Larutan yang di uji

·         Masukan Steker Power Supply ke Stop Kontak

·         Nyalakan Power suplly atur tegangan di 3 Volt

·         Kemudian masukan kedua batang karbon ke dalam gelas kimia yang berisi larutan

·         Ingat!!! Jangan sampai kedua batang karbon bersentuhan

·         Jika Kedua batang karbon mengeluarkan gelembung gas,dan lampu menyala terang maka larutan itu merupakan larutan elektrolit kuat

·         Jika Kedua batang karbon mengeluarkan gelembung gas dan lampu menyala redup atau mati maka larutan itu termasuk larutan elektrolit lemah.

·         Dan jika Kedua batang karbon tidak muncul gelembung gas maka larutan itu termasuk larutan non elektrolit.

·         Jika hambatan kawat tinggi,Power Suplly bisa di atur pada tegangan 6V – 9V

·         Jika larutan yang satu telah di uji,bersihkan batang karbon dengan air,dan selanjutnya menguji larutan yang lain,Begitu seterusnya.

                                                                        Larutan air jeruk lemon             larutan urea

HASIL PENGAMATAN :

NAMA LARUTAN	LAMPU	GELEMBUNG GAS	KETERANGAN
Air jeruk lebon	TERANG	ADA	ELEKTROLIT KUAT
urea	MATI	Tidak ADA	NONELEKTROLIT

Dapat Disimpulkan :

     Larutan air jeruk lemon yangdapat menghasilkan gelembung gas dan bahkan hingga menyalakan lampu disebut larutan elektrolit. Larutan elektrolit dapat menyalakanlampu karena dapat terionisasi dalam larutanya. Sedangkan larutan yang tidak dapatmenyalakan lampu ataupun menghasilkan gelempung gas disebut larutan nonelektrolit.

Cara kerja larutan elektrolit hingga dapat menyalakan lampu adalah sebagaiberikut, senyawa yang dilarutkan akan terionisasi sehingga menjadi ion positif(kation) dan negarif (anion) yang bergerak bebas. Selanjutnya kation akan menuju elektroda negatif (katoda) dan anion akan menuju elektroda positif (anoda) sehinggaterjadi aliran elektron yang menghantarkan listrik. Lampu akan mati ketika tidak ada lagi yang dapat terionisasi.

Maka larutan air jeruk termasuk larutan elektrolit

Dan larutan urea merupakan larutan non elektrolit

Lirik lagu avril

Lirik lagu avril  

  

 Wish You Were Here

i can be tough
i can be strong
but with you
it's not like that at all
there's a girl
that gives a shit
behind this wall
you just walked through it

[pre-chorus:]
and i remember all those crazy things you said
you left them running through my head
you're always there, you're everywhere
but right now i wish you were here.
all those crazy things we did
didn't think about it, just went with it
you're always there, you're everywhere
but right now i wish you were here

[chorus:]
damn, damn, damn,
what i'd do to have you
here, here, here
i wish you were here.
damn, damn, damn
what i'd do to have you
near, near, near
i wish you were here.

[verse 2:]
i love
the way you are
it's who i am
don't have to try hard
we always say
say it like it is
and the truth
is that i really mi-i-iss

[pre-chorus:]
all those crazy things you said (things you said)
you left them running through my head (through my head)
you're always there, you're everywhere
but right now i wish you were here.
all those crazy things we did (things we did)
didn't think about it, just went with it (went with it)
you're always there, you're everywhere
but right now i wish you were here

[chorus:]
damn, damn, damn,
what i'd do to have you
here, here, here
i wish you were here.
damn, damn, damn
what i'd do to have you
near, near, near
i wish you were here.

[bridge:]
no, i don't wanna let go
i just wanna let you know
that i never wanna let go

(let go, oh, oh)

no, i don't wanna let go
i just wanna let you know
that i never wanna let go

(let go let go let go let go let go let go let go)

[chorus:]
damn, damn, damn,
what i'd do to have you
here, here, here
i wish you were here (i wish you were here)
damn, damn, damn
what i'd do to have you
near, near, near
i wish you were here.

damn, damn, damn (damn)
what i'd do to have you
here, here, here (here)
i wish you were here.
damn, damn, damn
what i'd do to have you
near, near, near
i wish you were here.

                                                                                                  ^_^