NAME:___________________________ CLASS:_________________

SALTS, INDUSTRI, RATE [time =30 min, marks: 40]1. Name the reaction between

a. Potassium hydroxide and nitric acid :______________________________________1 b. Silver nitrate and sodium

chloride :________________________________________1 2. Why cannot lead (II) sulphate be prepared by using reaction between lead (II) oxide and

sulphuric acids? ______________________________________________________________ ___________________________________________________________________________ 2

3. Lead(II)carbonate decompose when heatinga. Name the gas

formed :__________________________________________________1b. How to test the gas?____________________________________________________

____________________________________________________________________2c. State the colour of product formed :______________________________________ 1

4. Zinc nitrate decompose when heating , produced brown gas.a. What is the brown gas?________________________________________________1 b. How to test the gas? ___________________________________________________

___________________________________________________________________2c. State the colour of product formed :______________________________________1

5. Confirmatory of anionanion procedure Observation & inference

Nitrate 1.Add 2 cm3 dilute sulphuric acid into test tube containing the salt solution.2.

3.2

Brown ring formed

Sulphate 1.Add 2cm3 hydrochloric acid into test tube containing the salt solution.2.

1

White precipitate formed

Carbonate 1. Add 2 cm3nitric acid into test tube containing the salt solution.2.Gas produced is passed through lime water 1

chloride 1. Add nitric acid into test tube containing the salt solution.

2.1

White precipitate formed

Confirmatory test for cation (all salt must soluble, if insoluble salt, react with nitric acid first to get the soluble salt). Fill the table below

Test with NaOH , solution Test with NH3 solution cationsWhite precipitate White precipitate 1White precipitate No change 1White precipitate,soluble in excess White precipitate,soluble in excess 1White precipitate,soluble in excess White precipitate 1Blue precipitate

1Cu2+

Green precipitate Green precipitate 11 Brown precipitate Fe3+

a. Describe the test to differentiate between Pb2+ and Al3+

__________________________________________________________________________2

6. Manufactured of sulphuric acid.a. Name the process :__________________________________________ 1b. State the condition needed for this proses

Temperature:___________Pressure: _____________Catalyst:__________1 c. Why sulphur trioxide cannot be react with water directly?

_____________________________________________________________ 17. Manufactured of ammonia.

a. Name the process:____________________________________________1b. State the condition needed for this proses

Temperature:___________Pressure: _____________Catalyst:_________18. What is alloy?_______________________________________________________1

a. Why alloy harder than pure metal?

_________________________________________________________________________ ___________________________________________________________________________3

9. Rate of reaction.a. What is rate of reaction?___________________________________________

______________________________________________________________1 b. Explain the factors below by using a collision theory

Size of reactant Temperature1.

2. Frequency of collision between reactants particles increase3.Frequency of effective collision between reactant particles increase4.Rate of reaction increase

1.

2.Frequency of collision between reactants particles increase3. Frequency of effective collision between reactant particles increase4. Rate of reaction increase

Concentration Presence catalyst1.

2.Frequency of collision between reactants particles increase3. Frequency of effective collision between reactant particles increase4. Rate of reaction increase

1.

2. Frequency of effective collision between reactant particles increase3. Rate of reaction increase

810. One question from basic test one. To be read by teacher during quiz time!!

..........................................................................................................................................11. One question from basic test two. To be read by teacher during quiz time!!

...........................................................................................................................................

NAME:_____________________________________________________ CLASS:_________________ SALTS, INDUSTRI, RATE [time =30 min, marks: 43]

1. Name the reaction between a. Potassium hydroxide and nitric acid :neutralization___1 b. Silver nitrate and sodium chloride :double decomposition reaction__1

2. Why lead (II) sulphate cannot be prepared by using reaction between lead (II) oxide and sulphuric acids? Lead sulphate is insoluble salt, cannot separate lead(II) sulphate from excess lead (II) oxide 2

3. Lead(II)carbonate decompose when heatinga. Name the gas formed :carbon dioxide gas 1b. How to test the gas? Flow the gas into test tube containing lime water, lime water

turns cloudy. 2c. State the colour of product formed : brown when hot, yellow when cold , 1

4. Zinc nitrate decompose when heating , produced brown gas.a. What is the brown gas? Nitrogen gas_1 b. How to test the gas? Put the damp blue litmue paper near the mouth of test tube,

blue litmus paper turns to red 2c. State the colour of product formed : yellow when hot, white when cold_1

5. Confirmatory of anionanion procedure Observation & inference

Nitrate 1.Add 2 cm3 dilute sulphuric acid into test tube containing the salt solution.2. add 2cm3 of iron(II)sulphate solution3.slanted the test tube , then add a few drops of concentrated sulphuric acid

2

Brown ring formed

Sulphate 1.Add 2cm3 hydrochloricc acid into test tube containing the salt solution.2.add a barium chloride solution

1

White precipitate formed

Carbonate 1. Add 2cm3 nitric acid into test tube containing the salt solution.2.gas produce is passed through lime water

Colourless gas produced that turns lime water cloudy 1

chloride 1. Add 2cm3 nitric acid into test tube containing the salt solution.2.add a silver nitrate solution

1

White precipitate formed

Confirmatory test for cation (all salt must soluble, if insoluble salt, react with nitric acid first to get the soluble salt). Fill the table below

Test with NaOH , solution Test with NH3 solution cationsWhite precipitate White precipitate Magnesium ion 1White precipitate No change Calcium ion 1White precipitate,soluble in excess

White precipitate,soluble in excess

Zinc ion 1

White precipitate,soluble in excess

White precipitate Lead(II)ion & aluminium ion1

Blue precipitate Blue precipitates, dissolves to form dark blue solution 1

Cu2+

Green precipitate Green precipitate Iron(II)ion 1Brown precipitate 1 Brown precipitate Fe3+

a. Describe the test to differentiate between Pb2+ and Al3+

Add potassium iodide into both solution, if yellow precipitate formed, the solution contain lead(II) ion.2

6. Manufactured of sulphuric acid.a. Name the process :Contact Process1b. State the condition needed for this proses

Temperature:450 oC_Pressure:1 atm_Catalyst:Vanadium(v)oxide 1 c. Why sulphur trioxide cannot be react with water directly?

The reaction produce a lot of heat , it will produces fumes 17. Manufactured of ammonia.

a. Name the process:Haber Process 1b. State the condition needed for this proses

Temperature:450 oC_Pressure: 200 atm Catalyst:iron 18. What is alloy? Is a mixture of two or more elements in a fixed composition where the main

composition is metal .1a. Why alloy harder than pure metal?

In pure metal, atoms are in the same size and in orderly arrangement. In alloy, the presence of foreign atom of different size destroy the orderly arrangement f atoms.When force is applied, the layer of atoms in alloy is difficult to slide compare to pure metal. 3

9. Rate of reaction.a. What is rate of reaction? Is a speed of reaction at which reactants are converted

into product_1 b. Explain the factors below by using a collision theory

Size of reactant Temperature1.The smaller the size of reactant, the larger the total surface area exposed for a collision2.Frequency of collision between reactants particles increase3.Frequency of effective collision between reactant particles increase4.Rate of reaction increase

1.the higher the temperature of reactants mixture, the higher the kinetic energy of particles.2. .Frequency of collision between reactants particles increase3. Frequency of effective collision between reactant particles increase4. Rate of reaction increase

Concentration Presence catalyst1.The higher the concentration of reactants, the higher the nomber of particles per unit volume.2. .Frequency of collision between reactants particles increase3. Frequency of effective collision between reactant particles increase4. Rate of reaction increase

1.Catalyst provide alternative path by providing lower activation energy. More colliding particles can overcome this activation energy.2. Frequency of effective collision between reactant particles increase3. Rate of reaction increase