Complete the equation

b) Which is the oxidising agent in this reaction?

Equation of the reaction between Cu and H₂SO₄ is given

a) The oxidation number of which one gets increased?

b) Which substance gets reduced?

c) Which is the reducing agent?

a) In the above reaction sodium chloride reacts with sulphuric acid to form hydrochloric acid. Like wise, if you want to prepare nitric acid which is the salt to be used

b) Write the equation of the reaction

a) Gases like Cl₂ , SO₂ , HCl are passed through Conc. H₂SO₄ during their laboratory preparation. Which property of sulphuric acid is utilised here?

b) NH₃ gas is not passed through H₂SO₄ during its lab preparation. Why?

A few drops of Conc. H₂SO₄ are added to a little sugar crystals taken in a watch glass

a) What will be the observation?

b) Analyse the equation and explain the reason

c) Which property of Sulphuric acid is exhibited here?

Why SO₃ is dissolved in concentrated sulphuric acid instead of in water during the manufacture of sulphuric acid?

a) In the above reaction sodium chloride reacts with sulphuric acid to form hydrochloric acid. Like wise, if you want to prepare nitric acid which is the salt to be used

b) Write the equation of the reaction

Complete the following equations related with the manufacture of sulphuric acid

i) Write a,b,c,d

ii) How is sulphuric acid prepared from oleum

a) Name the process of manufacture of sulphuric acid ?

b) Which is the catalyst used in this process ?

Carboxylic acid + Alcohol‍ + Heat ? Ester‍ + Water

a. In order to get ester we have to heat the mixture. Do you agree with this statement. Explain your answer based on Le- Chatelier’s Principle

b. What will happen to the forward reaction if the water formed in the system is removed from this system

   N₂O_4(g)   ?    2NO_2(g)

Consider this equilibrium and complete the table given below

Equation showing the decomposition of calcium cabonate is given.

CaCO_3(s) + Heat ? CaO_(g) + CO_2(g)

Say whether high temperature or low temperature is preferrable to enhance the rate of forward reaction

Equation of ammonia manufacture is given

N₂+3H₂ ? 2NH₃ + Heat

a. Name the process of manufacture of ammonia.

b. What is the effect of pressure in the equilibrium?

c. Though the forward reaction is exothermic a comparatively high temperature of 450⁰c is used here, why?

N₂ + O₂ + Heat  ? 2NO

How does each of the factors given below affect the rate of forward reaction?

a. Decrease in temperature

b. Increase in pressure

c. Removal of NO

The graph representing a reversible reaction is given.

a. Which of the graph represents backward reaction?

b. At which point does the system attain equilibrium?

c. When a system attains equilibrium, the concentration of reactants and products will not change. Why?

CO_(g) + H₂O _(g) ? CO₂(_g) + H_2(g)

How do the factors given below affect the above system at equilibrium.

a Carbon dioxide is removed

b. More carbonmonoxide  is added

c More hydrogen is added

N_2(g) + 3H_2(g) ? 2NH_{3 (g)}

Consider the system at equilibrium

a. Write any two methods to increase the amount of product.

b. Which is the catalyst that can be used here?

c. What is the effect of a catalyst on an equilibrium?

2SO_2(g) + O_2(g) ? 2SO_3(g) + Heat

a. How will the increase in the amount of oxygen affect the forward reaction?

b. Will an increase in pressure help formation of more amount of products.

Consider the following chemical equilibrium

14. 2CO(g) + O₂(g) ? 2CO₂(g)

a. What are the reactants 

b. What will happen to the equilibrium if more oxygen is added to the system. Explain

c. What will be the effect of increase in pressure on the forward reaction

N₂(g) + 3H₂(g) ? 2NH₃(g) + ????

What will be the effect of the following factors on the system at equilibrium

a. Ammonia is removed from the system

b. Decreased the temperature

c. Decreased the pressure

d. Hydrogen is added

 A,B and C are three gases .1 mole of A reacts reversibly with 1 mole of B to form 2 mole of C.

a. Write the equation of the above reaction?

b. What will be the effect of pressure on this system when it attains equilibrium

c. What will happen to the equilibrium when more of A is added to the system

d. What will happen to the system at equilibrium when the amount of C is increased

2HI_(g) + Heat ? H_2(g) + I_2(g)

Which among the following factor does not affect the system at equlibrium. Why?

(i) Increased the concentration of reactants

(ii) Added more hydrogen

(iii) Increased the temperature

(iv) Increased the pressure

A system at equilibrium is given

N_2 (g) + 3H_2 (g) ? 2NH_3 (g) + Heat

(a) When does a reversible reaction attain equilibrium.

(b) What change occur in concentration of reactants and products when the system is equilibrium

(Concetration of reactant is equal to the concentration of product, Concentration of reactants and concentration of products remain as such, Concentration of product increases)

Which among the following does not affect the rate of chemical reaction

(Temperature, Pressure, Colour of reactants, Concentration)

Optimum temperature used in the manufacture of ammonia is -----------

H₂(g) + I₂(g) ? 2HI(g)

Which of the following does not have any effect on the equilibrium?

(Temperature ,Pressure ,Concentration)

A System at equilibrium is given

N₂O_4 (g) ? 2NO_2 (g)

Write any two conditions which favour the formation of the NO₂ gas

Which of the following equilibria is not affected by change in pressure? Why?

i. H_2 (g) + I_2 (g) ? 2HI_(g)

ii. N₂O_4 (g) ? 2NO_2 (g)

Two bits of cotton wool dipped separately in Con HCl and ammonia solution are placed at the ends of a glass tube as shown in the figure.

a) What is the white fume formed by the reaction ?

b.Why is the thick white fume formed near the cotton wool dipped in Con.HCl.

A glass rod dipped in con HCl is shown in a gas jar filled with ammonia

a) Write the observation

b) NH₃ + HCl → ......................

What is the difference between liquor ammonia and liquid ammonia.

Observe the figure showing the the laboratory preparation of ammonia and answer the question