Question

Humbers ?
to find out the numbe u sigut
blain it
discovery of isotopes affect this law ?
In 50 3. Write short notes on:
(a)
(c)
10. Fra
pry.
constant proportion, (iii) Gay Lussac's law and
(iv) Law of multiple proportion.
wh
(a)
(c)
11. Mo
and
to mole concept, define atomic mass and molecula
ing
mass.
5. Define the history and various branches of chemistry
6. Define Avogadro's law. Prove that it is not in
contradiction with Dalton's atomic theory.
7. Define chemical equation and
8.
(a)
12. 12
and
be
(a)
(c)
a.
by
2. What is law of constant proportion ? How do
(i) Law of reciprocal proportion, (ii) Law o
4. What is mole and Avogadro's number ? According​

Answer 1

Answer:

Law of definite proportions: It states that a given chemical substance (compound) always contains the same elements combined in a fixed proportion by weight. It is also called the law of constant composition.

The law of combining volumes was given by Gay Lussac in 1808. It is applicable only to a gaseous reaction. According to this law, gases combine or are produced in a chemical reaction they do so in a simple ratio by volume provided all gases are at same temperature and pressure. So, the law of definite proportions when expressed in terms of volumes becomes 'Gay-Lussac's Law'. 

Avogadro's law states that 'equal volumes of all gases, at the same temperature and pressure, have the same number of molecules'.

According to Berzelius hypothesis, equal volumes of all gases contain an equal number of atoms under similar conditions of temperature and pressure.