TyroCity: Chemistry Notes

Verification of (Boyle's + Charles) Law

Chemistry 11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

VERIFY BOYLE’S LAW WITH THE HELP OF K.M.T

According to Boyle’s law at constant temperature, pressure & volume of a gas are related as:

PV = constant

According to Kinetic theory, pressure of a gas is

VERIFY CHARLES LAW WITH THE HELP OF K.M.T
According to Charles law at constant pressure, absolute temperature & volume of a gas are related as:
V/T = constant
According to Kinetic theory, pressure of a gas is

What do you understand by the term surface tension?

Chemistry 11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Ans: Surface tension is defined as the property of the liquid due to the inter molecular force of attraction between the liquid molecules due to which liquid tries to gain minimum surface area.

Mention physical properties of liquid due surface tension.

Chemistry 11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Spherical shape of liquid drop.

Rise and fall of liquid in a capillary tube.

Noble gas- Old is Gold

Chemistry 11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Why are noble gases chemically inert?
What are noble gases? Write any one use of noble gases.
The first ionization energy of noble gases is higher than that of halogens. Explain.
Give an important use of noble gases.

Environmental Pollution- Old is Gold

Chemistry 11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

What is meant by acid rain? Give one major effect of acid rain.

Empirical, Molecular Formula and Limiting Reactants

Chemistry 11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

What is limiting reactants? Why is it essential in stoichiometric calculations?
10.6gm of pure Na2CO3 if treated with 7.9gm of HCl to produce NaCl, H2O and CO2, (5 marks)

a) Find the limiting reactants and calculate mole of unreacted reagent left over.

b) What volume of CO2 gas is produced at NTP?

c) Calculate the mass of NaCl formed.

A chemical reaction was carried out by mixing 25gm of pure Calcium Carbonate and 0.75 mule of pure hydrochloric acid to give CaCl2, H2O and CO2. (5 marks)

a) Which one is the limiting reactant and why?

b) Calculate the mass of CaCl2 produced.

c) How many numbers of water molecules are formed?

d) What mass of NaOH is required to absorb the whole CO2 produced in the reaction?

Why is a mercury droplet spherical?

Chemistry 11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Ans: Due to surface tension. Surface tension is the property of liquid due to which it tries to acquire minimum surface area. Since, for a given volume sphere has a minimum surface area, a mercury droplet is spherical.

Alkaline Earth Metals

Chemistry 11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Name the alkaline earth metals and write their symbols also.
Give the formulae of Bleaching powder and blue vitriol.
Write the chemical formula and one of the uses of Epsom salt, plaster of paris and quick lime.
How is quick lime prepared from marble? Give pertinent equation.
How is plaster of paris prepared?
Explain with suitable chemical reactions:

a) Quick lime produces hissihg sound when added into cold water.

What is meant by slaking of lime? How is lime waterprepared from slaked lime?
Why is plaster of paris suitable for immobilising of broken limbs?
Starting from quick lime, how would you prepare lime water? What is meant by milk of lime?

Structure Isomerism in Organic Compounds

Chemistry 11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

1. Write the isomers of C2H6O and give their IUPAC names.

Write the isomers of C2H4O2 and give their IUPAC names.
Write the possible isomers of C6H14 and give their IUPAC names.
Write short notes on structure isomerism in Organic Compound.
Write the isomers of C4H10 and give their IUPAC names.

What do you mean by boiling point and evaporation?

Chemistry 11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Boiling point is the temperature at which the vapour pressure becomes equal to atmospheric pressure.

Evaporation is defined as the process of conversion of liquid into vapour from the surface of the liquid at room temperature.

Name the physical property behind rise of liquids in capillary tube.

Chemistry 11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Ans: Surface Tension

In terms of vapour pressure, what do you mean by a boiling point of a liquid?

Chemistry 11 Notes — Sat, 12 Jul 2014 05:41:42 +0000

Ans: Boiling point is the temperature at which the vapour pressure becomes equal to atmospheric pressure.