Posts
Law of chemical combination
5:59 AM Edit This 0 Comments »
1):- Law of conservation of Energy:-
This law states that during any chemical reaction mass is neither created or destroyed, but it only changes from one form to another form.
this law can be verified by the following ex[eriment.
Experiment:-
take 25cm(cube) nacl solution in a conical flask. In a samll test tube take 5cm(cube) of silver nitrate solution(AGNO3) suspend this small test tube in the conical flask with the help of threads in away that the two solution do not mix with each other.
Now take this apparatus to the top loading balance to weight this.
Let the two solution react with each other, they give white recipate which shows that chemical reaction has occured.
weight the flask again.The mass of the flask will remain same, which proves that the total mass of reactants and products is same.
2):- Law of Definite Proportion:-
This law states that the ratio in which two different elements combine to give a pure compound will always remain.
The water, we can ger from different sources like river, ocean rain etc. If there are analyzed, we will find the ratio (in each of water) 2:16 is hydrogen and oxygen.
e.g H2O (according to number of atom)
2:1
according to ratio in water molecule there is 2 hydrogen and 1 oxygen.
Now H2O (according to atomic mass)
1(2):16
2:16
3):- Law of Multiple Proportion:-
when two elements combine to give more than one compounds , the different masses of one element will be in simple whole number ratio. which will combine with the fixed mass of other element.
Examples:-
In H2O there is 2g of hydrogen combine with 32g of oxygen. there is a ratio of 16:32 between the oxygen of H20 and H2O
16:32
1:2
4):- Law of Reciprocal Proportion:-
when two elements combine with an element "E" having fixed number or mass, the ratio in which "A" and "B" combine with "E"is either same like the ratio in which "A" and "B" combine with each other to form a compound or exactly divisible by that ratio.
Example
1ST Condition:-
if the ratio are same in CH4 and CCL4 carbon combine with 4 Hydrogen and 4 chlorine respectively.
according to number of atom there is a ratio berween the hydrogen of CH4 and chlorine of CCL4 which is 4:4
1:1
This law states that during any chemical reaction mass is neither created or destroyed, but it only changes from one form to another form.
this law can be verified by the following ex[eriment.
Experiment:-
take 25cm(cube) nacl solution in a conical flask. In a samll test tube take 5cm(cube) of silver nitrate solution(AGNO3) suspend this small test tube in the conical flask with the help of threads in away that the two solution do not mix with each other.
Now take this apparatus to the top loading balance to weight this.
Let the two solution react with each other, they give white recipate which shows that chemical reaction has occured.
weight the flask again.The mass of the flask will remain same, which proves that the total mass of reactants and products is same.
2):- Law of Definite Proportion:-
This law states that the ratio in which two different elements combine to give a pure compound will always remain.
The water, we can ger from different sources like river, ocean rain etc. If there are analyzed, we will find the ratio (in each of water) 2:16 is hydrogen and oxygen.
e.g H2O (according to number of atom)
2:1
according to ratio in water molecule there is 2 hydrogen and 1 oxygen.
Now H2O (according to atomic mass)
1(2):16
2:16
3):- Law of Multiple Proportion:-
when two elements combine to give more than one compounds , the different masses of one element will be in simple whole number ratio. which will combine with the fixed mass of other element.
Examples:-
In H2O there is 2g of hydrogen combine with 32g of oxygen. there is a ratio of 16:32 between the oxygen of H20 and H2O
16:32
1:2
4):- Law of Reciprocal Proportion:-
when two elements combine with an element "E" having fixed number or mass, the ratio in which "A" and "B" combine with "E"is either same like the ratio in which "A" and "B" combine with each other to form a compound or exactly divisible by that ratio.
Example
1ST Condition:-
if the ratio are same in CH4 and CCL4 carbon combine with 4 Hydrogen and 4 chlorine respectively.
according to number of atom there is a ratio berween the hydrogen of CH4 and chlorine of CCL4 which is 4:4
1:1
0 comments:
Post a Comment