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Dr. Kamlapati Bhatt 8 years, 3 months ago
The reaction , ( ZnO + C -----> Zn + CO ) occurs at 750o C .
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Dr. Kamlapati Bhatt 8 years, 3 months ago
Chlorobenzene can be converted to toluene applying Wutz - Fittig's reaction . A mixture of chlorobenzene and methyl chloride when treated with dry sodium in presence of ether yields toluene. The reaction is represented as below ,
Posted by Dheeraj Kumar 8 years, 3 months ago
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Ilu Ahirwar 8 years, 3 months ago
In {tex}H_2O{/tex} (water) there is strong hydrogen bonding, and the molecules get extensively associated in an infinite fashion by weak electrostatic forces. So, water exists as a liquid at room temperature with a high boiling point.
Sulphur is less electronegative than oxygen, and the S-H bond is much less polar than the O-H bond. Hence, there is no hydrogen bonding in hydrogen sulphide, and it exists as a gas normally with discrete {tex}H_2S{/tex} molecules.
Only fluorine, oxygen and nitrogen are capable of hydrogen bonding in compounds having the F-H, O-H and N-H bonds respectively.
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Amar Kumar 8 years, 3 months ago
The mole is one of the base units of the SI, and has the unit symbol mol.The unit is defined as the amount of a chemical substance that contains as many representative particles, e.g., atoms, molecules, ions, electrons, or photons, as there are atoms in 12 grams of carbon-12 (12C), the isotope of carbon with standard atomic weight 12 by definition. This number is expressed by the Avogadro constant, which has a value of 6.022140857×1023 mol-1 .
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Dr. Kamlapati Bhatt 8 years, 3 months ago
The elements placed in group 16 of the periodic table are known as ''Chalcogens''. This term is very often used for group -16 element because they are sulphide forming elements .
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Saurabh Yadav 8 years, 3 months ago
1Thank You