Question

what is the law of reciprocal proportions explain in detail with examples..

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Answer 1

The law of reciprocal proportions was proposed by Jeremias Ritcher in 1792. It states that, "If two different elements combine separately with the same weight of a third element, the ratio of the masses in which they do so are either the same or a simple multiple of the mass ratio in which they combine."As an example,[3] 1 gram of sodium (Na = A) is observed to combine with either 1.54 grams of chlorine (Cl = B) or 5.52 grams of iodine (I = C). (These ratios correspond to the modern formulas NaCl and NaI). The ratio of these two weights is 5.52/1.54 = 3.58. It is also observed that 1 gram of chlorine reacts with 1.19 g of iodine

Answer 2

Hello Friend,

Please Read it carefully it is a very detailed answer :-

Law of reciprocal proportions was put forward by Jeremias Richter in 1972. I stated that :-

When two different elements combine separately with a fixed mass of a third element, the ratio in which they do they so will be the same or some simple multiple of the ratio in which they combine with each other.


In other words the mass ratio of 2 elements A and B which combine with the fixed mass of C separately, is either the same or some simple whole number multiple of the mass ratio in which A and B combined together. This law may be illustrated by the following examples :-

Consider three elements Sulphur, Oxygen and Hydrogen. Both Sulphur and oxygen separately combine to form hydrogen sulphide (H2S) and water(H2O) respectively. They also combine with each other to form and sulphur dioxide (SO2) as shown :

According to the law, the ratio of weights of S and O which combine with same weight of H will either be same or simple multiple of the ratio in which S and O combine with each other. This may be verified as :-

In hydrogen sulphide(H2S), 2 parts by weight of hydrogen combine with 32 parts by weight of sulphur. (Continued in Picture Further).
( Please Refer to Picture for Continued Example).

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