Factors Affecting the Rate of a Chemical Reaction

Q.

Define molecularity of a reaction?

Q.

Write the thermal decomposition reaction of Baking soda.

Q.

Define endothermic reaction.

Q.

Balance the following chemical equation: $KN{O}_3\to KN{O}_2+O_2$

Q.

What is breaking and making of bonds in chemical reaction called

Q.

What is an instantaneous rate of reaction?

Q.

Explain the effect of temperature on the rate of reaction.

Q.

^{Blanced chemical equation for the reaction}

^{Aluminium chloride + Ammonium hydroxide -- Aluminium hydroxide +Ammonium chloride}

Q.

$2\mathrm{NaCl}\to 2\mathrm{Na}+{\mathrm{Cl}}_2$

The above reaction can be successfully done using:

1. Thermal decomposition

2. Photolytic decomposition

3. Electrolytic decomposition

4. Enzymatic decomposition

Q.

What is the $K_{sp}$ expression for lead (II) chloride?

Q.

What is an ionic equitation? Explain with an example.

Q.

Does every collision between reacting particles lead to products?

Q. Explanation of graphs of exothermic and endothermic reactions

Q. What happens to the temperature of beaker in which reaction is happeneing in exothermic and endothermic reactions respectively ? In which one it rises and.in which one it dips?

Q.

For a reaction $2A+B\to 2AB$, it is found that doubling the concentration of both the reactants increases the rate to eight times that of initial rate but doubling the concentration of B alone doubles the rate. Then the order of the reaction with respect to A and B is

1. 0, 3

2. 0, 2

3. 2, 1

4. 2, 2

Q.

Reaction in which energy is absorbed is known as _____ reaction.

Q. When the concentration of the reactants increases, the rate of reaction will.

1. decrease
2. increase
3. remains constant

Q.

“Rate of reaction increases with increase in the concentration of reactants.” Explain.

Q.

Balance the chemical equation $Mg+O_2\to MgO$

Q.

Give one test each to distinguish between the following pairs of chemicals:

Zinc nitrate solution and calcium nitrate solution.

Q.

Is the activation energy-dependent on temperature?

Q.

As the concentration of reactants increases, the number of molecules per unit volume and the number of effective collisions ___.Consequently, the speed of reaction ___.

1. increases, decreases

2. increases, increases

3. decreases, increases

4. decreases, decreases

Q. The rate of reaction on increasing the surface area of reactants.

1. decreases
2. increases
3. remains constant

Q.

Identify the type of reaction :

${\mathrm{PCl}}_5\rightleftharpoons {\mathrm{PCl}}_3+{\mathrm{Cl}}_2$

Q.

When firewoods are cut into small pieces then the rate of the reaction increases. Which of the following factor is mainly responsible for it?

1. An increase in concentration
2. An increase in surface area
3. A decrease in concentration
4. A decrease in the surface area

Q.

Is a Catalyst an Enzyme?

Q. How does the graph of molar conductivity vs square root of concentration look like for NaCl?

1. 
2. 
3. 
4. 

Q.

The rate of decomposition of potassium chlorate can be increased by using a catalyst. Give reason.

Q.

If you want to increase the rate of the reaction then:

1. increase the concentration of the reactants.

2. decrease the pressure of the reacting gases.

3. decrease the surface area exposed of the reactant.

4. increase the temperature of the reaction

Q. Assertion :Order of a reaction with respect to any reactant can be zero, positive, negative or fractional. Reason: Rate of a reaction cannot decrease with increase in concentration of a reactant or a product.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect