TyroCity: Chemistry 11 Notes

Ozone

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

Write resonance structures of ozone.
How does CFC deplet Ozone layer?

Solid State

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

Explain why sodium chloride does not conduct electricity in solid but a good conductor when molten.
Distinguish between crystalline and amorphous solid.
Distinguish between Crystal Lattice and unit cell.

Electronic Theory of Valency and Bonding

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

What is Lewis base? Give its examples.
What is Lewis acid? Give its examples.
Distinguish between a covalent and a co-ordinate covalent bond.
Hw does a covalent bond differ from an ionic bond?
What types of bonds are involved in oxygen and calcium fluoride molecules?
What is octate rule? Name the compounds which donâ€™t obey Octet rule.
Why water is an excellent solvent for a polar substance?
Define Hydrogen bond. How is it originated?
Why does water have such a relatively high boiling point?
Why is solid sodium chloride a non conductor of electricity?
Why are metals malleable and ductile?
Define dipole moment. What is its unit? Mention its application.
Discuss the formation of potassium chloride and carbon tetrachloride molecules on the basis of electronic theory of valency. Give any two characteristics of ionic and covalent compounds.
Write short notes on Resonance.
Give an example of intermolecular and intramolecular hydrogen bond.
What is meant by metallic bond?
Each carbon-oxygen bond in CO2 is polar but CO2 molecule is non-polar. Give reason.
Write one important property of the compound formed by the two atoms x and y whose valence shell electronic configuration are 3S1 and 3S23P5 respectively.
Give reasons: a) Ammonia has higher boiling point than Phospine. b) CO2 got linear structure while H2O got angular structure. c) HCl has polar character though it has covalent bond.
Write down the lewis structure of following compounds:

a) CCl4

b) SO4^-2

c) SO2

d) N2O5

e) NH4Cl

f) BF3

g) NO2

h) N2O3

i) H2O2

j) HNO2

k) NH2⁺

l) H2SO4

m) NH4NO3

n) H3BO3

Define coefficient of viscosity. How coefficient of viscosity is related with viscous force?

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

Ans: Coefficient of viscosity is defined as the tangential force per unit area required to maintain unit velocity gradient between the layers of liquid.

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.

The meniscus for mercury in a glass tube is concave downward. Explain.

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

Ans: Because cohesive force between molecules of mercury is greater than the adhesive force between mercury and glass molecules.

Gaseous State

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

At what condition the value of P xV is always constant?
Draw volume (V) and temperature (tÂ°C) relationship of gases at constant pressure. Indicate the temperature at which the volume occupied by the gas becomes zero. Name that temperature.
What do you mean by ideal gas and real gas?
What is an ideal gas? Under what conditions will a gas behave nearly like an ideal gas?
State Dalton’s law of partial pressure.
What is universal gas constant?
State and explain Graham’s law of diffusion of gases.
5 grams of hydrogen diffused through a porous membrane in 30 minutes. Find the time required to diffuse the same amount of SO2 gas at identical conditions.

Boron and Silicon- Old is Gold

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

Write the formula of Borax and boric acid.
Give an important use of Silicon.

Avogadro’s Hypothesis and Its Application

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

In what ways have Avogadro’s hypothesis given support to Dalton’s atomic theory?

How is surface tension originated?

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

Bulk molecule feels force from all direction since it has molecules in all direction due to which resultant force
becomes zero but surface molecules only feels inward force since it lies at the surface due to which the resultant force in surface molecules is not zero. Resultant force is in inward direction for surface molecules. Because of this, the surface molecules acts as a stretched membrane and is attracted inward finally resulting surface tension. This is how surface tension is originated.
In short, surface tension is originated due to unequal existence of cohesive force felt by surface molecules of liquid as in above figure.

Dalton’s Atomic Theory and Laws of Stoichiometry

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

State the Law of Multiple Proportions.
State the law of Constant Proportion.
State the Law of Reciprocal Proportion.
How did the law of multiple proportions encourage Dalton to introduce atomic theory?
H and O react separately to give H2O2 and H2O respectively. What law of stoichiometry is illustrated? State the law.
Phosphorous reacts with oxygen to produce P2O3 and P2O5 respectively. Which Chemical law does the data illustrate? State the Law.
State the Law of conservation of mass. Why is this law known as Law of indestructibility of matter?
12gm of Carbon react with 32gm of oxygen to produce 44gm of Carbon dioxide. Which Chemical Law do these data illustrate? State the Law.

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.