laporan PH asam dan basa kelas xi

Report 2

The PH Solution of Acid and Base

I.         Purpose :

To measure the pH solution of strong and weak acid / base whose concentration using natural indicator.

II.       Basic theory

Natural indicators can include kitchen materials, flowers, or fruit - fruit. To be able to be used, such materials must be made form of a solution by means attenuating then examined indicator solution into the acid-base solution. Color changes that occur in each indicator varies naturally. Previously we tested with a solution of NaOH and CH₃ COOH.

III.      Tools and materials
Test tube                             5
Second beaker
Pipette drops of                  6
Pipette drops small            1
Plat drops                            2
spatula                                 1
Mortil                                     1
NaOH
Acid and alkaline solution
CH3 COOH
Natural Indicator (japanese kambodia, orchid, tapak dara, eporbia, turmeric)
water

IV.     Steps            :

1.    Filling the water into each beaker.

2.    Giving the label on each tube reaction, writing A, B, C, D, E on it.

3.    Blending of flower ( as natural indicator).

4.    Giving the water on flower that have been soft.

5.          Droping CH₃COOH on drop plate          5 coloumb (suitable the sum of indicator).

    NaOH water on drop plate               5 coloumb.

6.             Taking flower solution using small drop pipette on pipette drop (each of solution drop into one coloumb CH₃COOH and one coloumb NaOH water). Writing the changing colour.

7.    Drop A, B, C, D, E solution (in drop plate).

8.    Drop flower solution into A, B, C, D, E solution (in drop plate)

9.    Writing the changing of colour.

	Rose	Curcuma	Kol Merah	Bougenvil	Kamboja
CH3COOH	Pink	Kuning	Ungu Muda	Merah Muda	Merah Muda
NaOH	Hijau Muda	Orange	Hijau Kebiruan	Hijau Tua	Hijau Tua

	A	B	C	D	E
Mawar	Pink Muda	Kuning	Pink Pekat	Kuning	Kuning
Kamboja	Merah Muda	Hijau Muda	Merah Muda	Hijau Pekat	Hijau Muda
Kol Ungu	Pink	Hijau Muda	Pink	Hijau Muda	Hijau
Kunyit	Kuning	Kuning Tua	Kuning	Kuning Tua	Kuning Tua
Bougenvil	Ungu	Kuning	Kuning	Kuning	Kuning Tua

V.   Conclusion:
A solution is acidic
B solution is base
C solution is acidic
D solution is base
E solution is base

VI.          Photos

          

Gambar 2.4 menghaluskan indicator alam       Gambar 2.5 perubahan warna pada larutan         A,B,C,D,E

             

Gambar 2.6 perubahan warna pada                        

cuka dan kapur

VII.         Bibliography

Utami, Budi, Agung Nugroho Catur Saputro, Lina Mahardiani, Sri Yamtinah, Bakti     Mulyani.  2006. Simpati. Surakarta:Grahadi.

Sudarmo, Unggul. 2004. Kimia. Surakarta:Seri Made Simple.

Susilowati, Endang. 2009. Chemistry. Solo:Tiga Serangkai.