Ujian Kation dan Anion

Lihat warna Garam Pemanasan Ujian gas

Tambah air suling

larut tidak

larut Not in syllabusIon dalam larutan

aqueous

Ujian kation Ujian anionTujuan :Untuk menentukan kation dan anion di dalam sampel yang tidak diketahui, K1,-K6Apparatus: Test tubes, test tube rack, test tube holder, 50 cm3 beaker, filter funnel, spatula,dropper, delivery tube, Bunsen burner, wash bottle.Method , observation and inferenceBagi garam yang tidak diketahui K1/K2/K3 lakukan ujian kation.

Ujian KaedahTEST FOR CATION

(using alkali)1 Larutan Natrium hidroksida, NaOH ditambahkan kepada 2 cm3 larutan K1/K2/K3

sedikit demi sedikit sehingga berlebihan.2 Larutan Aqueous ammonia,NH3 ditambahkan kepada 2 cm3 larutan K1/K2/K3

sedikit demi sedikit sehingga berlebihan.

Bagi garam yang tidak diketahui K4/K5/K6 lakukan ujian AnionUjian Kaedah

TEST FOR

ANION(using acid)

1 2cm3 Asid nitrit cair,HNO3 ditambahkan sedikit demi sedikit ke dalam 2cm3 sampel larutan.Sekiranya terdapat gas yg tidak berwarna terhasil. Gas tersebut akan dialirkan ke dalam tabung uji yang berisi air kapur.

2 2cm3 Acid hydrochloric cair, HCI, ditambahkan diikuti oleh 2cm3 barium chloride, BaCl2 kedalam 2 cm3 of sampel larutan.

3 2cm3 Asid nitric acid HNO3 ditambahkan diikuti oleh 2cm3 Argentum nitrate, AgNO3 kedalam 2 cm3 of sampel larutan.

4 2cm3 Asid sulphuric cair, H2 SO4 ditambahkan diikuti iron(Il)sulphate, FeSO4 kedalam 2 cm3 of sampel larutan. Tabung uji digoncang . Beberapa titis asid sulfuric pekat, H2SO4 dimasukkan kedalam tabung uji.

Tabulation data

SAMPEL PEMERHATIAN INFERENCE

Kesimpulan : Kation ____ adalah____.Kation ____adalah_____. Anion_____adalah______

Method , observation and inference

For the unknown salt, K3 which contains one cation and one anion only. Carried out the following test

Test Method Observation InferenceT

ES

T F

OR

C

AT

ION 1 Sodium hydroxide, NaOH solution was

added slowly to 2 cm3 of K3 solution.

2 Aqueous ammonia,NH3 solution wasadded slowly to 2 cm3of K3 solution.

3 Potassium iodide; KI solution was added to 2 cm3 of K3 solution.

TE

ST

FO

R A

NIO

N

1 Dilute nitric acid,HNO3 was added to 2cm3 of K3 solution.

2 Dilute hydrochloric acid, HCI followed bybarium chloride, BaCl2 solution was added to 2 cm3 of K3 solution .

3 Dilute nitric acid HNO3 followed by silver nitrate, AgNO3 solution were added to2 cm3 of K3 solution.

4 Dilute sulphuric acid, H2 SO4 followed byIron(Il)sulphate, FeSO4solution were added to 2 cm3 of K3 solution. The test tube was shaken well. A few drops of concentrated sulphuric acid, H2SO4 was then added without shaking the test tube

Conclusion : Salt K3 contain ………………………….[CATION] and ………………………………..[ANION]