Tuesday, January 25, 2011

Solubility of AgCl precipitate

I hope chemistry students are familiar with this fact. this is an experiment commonly done in labs. Remember that AgCl precipitate is soluble in ammonium hydroxide solution.

Friday, January 21, 2011

Which is the type of bond seen in HBr molecule?

Polar covalent bond.

Do you know the number of different oxides formed by nitrogen?

I hope chemistry students are familiar with this question. You should know the correct answer as this is an important point.
Remember that the number of different oxides formed by nitrogen is five.

Do you know the reason why there is low solubility of AgCl in water?

  • The low solubility of AgCl in water is mainly due to its high lattice energy.

Solubility of lower alcohols

This post is related to the solubility of lower alcohols.
My question is:
Do you know the reason why lower alcohols are readily soluble in water? The answer is that the readily solubility of lower alcohols in water is mainly due to the fact that they form hydrogen bond in water.

The meso form of tartaric acid is neither laevo nor dextro rotatory. why?

This is an important question related to tartaric acid. Do you know the answer? If not, check the below points.
Answer:
Meso form of tartaric acid is neither laevo nor dextro rotatory mainly due to internal compensation.

Tuesday, November 30, 2010

Among the following which is known as vitamin B12?

Options:
  • Cyanocobalamin
  • Retinol
  • Riboflavin
  • Pyridoxine

Answer: Cyanocobalamin

Cyanocobalamin:

As stated above cyanocobalamin is known as vitamin B12. Actually cyanocobalamin is needed for the normal production of red blood cells. It is also required for the nerve cells. Remember that the deficiency of cyanocobalamin results in a disease known as pernicious anaemia. It is important to note that vitamin B & C are water soluble vitamins.

Retinol:

Retinol is known as vitamin A. This is a fat soluble vitamin. Do you know the deficiency disease of vitamin A? Remember that the deficency of vitamin A results in a disease known as xerophthalmia & night blindness.

Riboflavin:

Vitamin B2 is known as riboflavin. It is interesting to note that this vitamin is seen in green vegetables, milk & liver. The deficiency of riboflavin results in inflammation of the tongue.

Pyridoxine:

Remember that the another name for pyridoxine is vitamin B6. This vitamin is seen in cereal grains & milk. It is important to note that the deficiency of pyridoxine results in retarded growth & dermatitis.