In biochemical systems
pH plays a very significant role in biochemical reactions. For example, the blood in our bodies is buffered at a pH value of 7.36-7.42 due to bicarbonate - carbonic acid buffer. A mere change of 0.2 pH units can cause death. Certain enzymes get activated only at certain definite pH value..
Position of Chlorine in the Periodic Table
1.Chlorine is placed second after fluorine in group VIIA. 2. Other members of this group are fluorine, bromine, iodine and astatine (the last member is radioactive). 3. Members of this group are called 'halogens' meaning salt producers. 4. Atoms of halogens have seven electro..
1.Chlorine is placed second after fluorine in group VIIA. 2. Other members of this group are fluorine, bromine, iodine and astatine (the last member is radioactive). 3. Members of this group are called 'halogens' meaning salt producers. 4. Atoms of halogens have seven electro..Formation of sodium chloride
In the formation of sodium chloride, ..
In the formation of sodium chloride, ..Formation of sodium chloride
For example, during the formation of an ionic bond between sodium and chlorine atoms, sodium atom (1s 2 2s 2 2p 6 3s 1 ) has only one electron in its valence shell. By losing this one electron it complete its octet and acquires the noble gas configuration of neon (2, 8). While the chlorine atom..
For example, during the formation of an ionic bond between sodium and chlorine atoms, sodium atom (1s 2 2s 2 2p 6 3s 1 ) has only one electron in its valence shell. By losing this one electron it complete its octet and acquires the noble gas configuration of neon (2, 8). While the chlorine atom..Magnetic Quantum Number (m)
, +1 or p-subshell contains three orbitals called p- orbitals. If l=2, m may be -2, -1, 0, +1, +2 or d-subshell contains five orbitals called d-orbitals. Similarly, it can be shown that f-subshell can have seven orbitals. The number of orbitals in a subshells are given belo..
, +1 or p-subshell contains three orbitals called p- orbitals. If l=2, m may be -2, -1, 0, +1, +2 or d-subshell contains five orbitals called d-orbitals. Similarly, it can be shown that f-subshell can have seven orbitals. The number of orbitals in a subshells are given belo..Solution:
1 mole of N 2 = 1 GMM 1 mole of N 2 = 2 x 14g = 28g 1 mole = 28 g ? = 7 g 7g of nitrogen is equal to 0.25 mol..
1 mole of N 2 = 1 GMM 1 mole of N 2 = 2 x 14g = 28g 1 mole = 28 g ? = 7 g 7g of nitrogen is equal to 0.25 mol..Colloids
A colloid is a solution in which the particle size ranges between 10 - 7 and 10 - 5 cm. For example, milk, blood, honey, smoke, ink, gum, starch solution et..
Liquefaction
When cooled under pressure ammonia condenses to a colorless liquid, which boils at -33.4 o C. When further cooled, it freezes to a white crystalline snow-like solid, which melts at -77.7 o ..
When K » 1
When the value of K is very high such as, 10 7 -10 1 5 or more, the reaction proceeds to almost completion. In such reactions almost the whole of the reacting substance gets converted into product..
From tincal
It is obtained from tincal by extracting it with water, concentrating the solution and leaving it for crystallization, when crystals of borax, Na 2 B 4 O 7 .10H 2 O separate ou..
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