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2 Chemistry -- Chemical Kinetics

What is activation energy in a chemical reaction?

What is activation energy in a chemical reaction?

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More questions on Chemical Kinetics

What is the difference between a simple cell and a galvanic cell?

Sorry for my late response. I didn't used the mattrab for a week long due to practical exam.

Simple cell is usually referred to as a cell from which chemical reaction is carried out by the help of electricity.It is also know as electrolytic cell

Where as in galvanic cell, electricity is generated out of chemical reaction(i.e. redox reaction).Galvanic cell is also know as electrochemical cell.

Define secondary standard solution with suitable examples.

Those solutions which are standardized by the titration with the primary standard solution are called a secondary standard solution.

The examples of thesecondary standard solution are:

  1. Decinormal H2SO4solution
  2. Normal NaOH solution

Describe the preparation and purification of pure and dry chloroform in the laboratory.Give its action upon:heated silver.aq. KOHaniline in the presence of aq. NaOH

Mention the condition of precipitation in terms of solubility product and ionic product.

When, Ionic Product > Solubility product, precipitation occurs.

What is Riemann's green?

Riemann's green is a green pigment ZnO.CoO, which is obtained by heating amixture of zinc oxide and cobalt nitrate orby the reaction of cobalt nitrate with either3Zn(OH)2ZnCO3or zinc sulphate.

Why is sigma bond stronger than pi bond?

Sigma bond is stronger than Pi bond because of the following reasons:

  1. The extent of overlapping in Sigma bond is greater than in Pi bond.
  2. The electron density in intermolecular axis is more in Sigma bond than in Pi bond.
  3. There is free rotation of atom about Sigma bond but not about Pi bond.

Define the terms system and surroundings.

Systems refers to the specific part of the universe comprising of interdependent or interlinked components which are of special interest to us.

For example: Various parts performing various tasks have been put together to create a well-functioning car, so, "car" is a system.

Surrounding refers to the area around any object, place or being taken as a reference.

pH of water at 24°c is 7. What effect does increase in temperature results in pH of water?1)pH will be more than 72) pH will be less than 73) pH will be equal to 74) can't be determined

Option 2is correct ans .

Dissociation of water is an endothermic reversible reaction.

When temperature is increased , for an endothermic reaction in equilibrium , it shifts the equilibrium to forward direction i.e. more product is formed which in this case means : more water is dissociated ( more H+ concentration ) is obtained . Ph= negative logarithm of H+ concentration so, more H+ concentration means, lesser Ph. so , whole ph range gets changed when temperature is increased i.e at that time,...

Draw the energy profile diagram to show the effect of catalyst on the rate of reaction.

What is the order of reaction whose rate constant has the same unit as the rate of reaction?

A hypothetical reaction P + Q -> Z is a third order reaction. Write its possible rate law expression.

A reaction is second order with respect to a reactant. How is the rate of reaction affected if the concentration of the reactant isi) doubledii) reduced to half?

Draw an energy profile diagram to show influence of catalyst in the rate of chemical reaction.

What are the essential conditions for the effective collision of reacting species?

Define the terms:i) activated complexii) rate of reaction

The following hypothetical reaction is second orer, A + B -> Z. Write possible rate law expression.

For a hypothetical reaction A + B -> Z, the rate of reaction is doubled when concentration of A is doubled but here is no effect of change of concentration of B.i) Write down the rate law.ii) Wh...

How does a catalyst affect rate of reaction?

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