law of multiple proportions การใช้

• Careful study of the actual numerical values of these proportions led Dalton to propose his law of multiple proportions.
• The law of multiple proportions is one of the basic laws of stoichiometry used to establish the atomic theory.
• The extension of this idea to substances in general necessarily led him to the law of multiple proportions, and the comparison with experiment brilliantly confirmed his deduction.
• Amount of substance appears in thermodynamic relations such as the ideal gas law, and in stoichiometric relations between reacting molecules as in the law of multiple proportions.
• Chemists generally steered away from anything that did not seem to follow Dalton's laws of multiple proportions and the problem was considered the domain of a different science, metallurgy.
• This is known as the law of multiple proportions or Dalton's law, and Dalton included a clear description of the law in his " New System of Chemical Philosophy ".
• ;1808 : John Dalton publishes " New System of Chemical Philosophy ", which contains first modern scientific description of the atomic theory, and clear description of the law of multiple proportions.
• In chemistry, the "'law of multiple proportions "'is one of the basic British chemist John Dalton, who published it in the first part of the first volume of his " New System of Chemical Philosophy " ( 1808 ).
• Stoichiometry rests upon the very basic laws that help to understand it better, i . e ., law of conservation of mass, the law of definite proportions ( i . e ., the law of constant composition ), the law of multiple proportions and the law of reciprocal proportions.
• French chemist Joseph Proust proposed the law of definite proportions, which states that elements always combine in small, whole number ratios to form compounds, based on several experiments conducted between 1797 and 1804 Along with the law of multiple proportions, the law of definite proportions forms the basis of stoichiometry.
• John Dalton studied and expanded upon this previous work and developed the law of multiple proportions : if two elements can be combined to form a number of possible compounds, then the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of small whole numbers.
• It may be noted that in a paper on the proportion of the gases or elastic fluids constituting the atmosphere, read by him in November 1802, the law of multiple proportions appears to be anticipated in the words : " The elements of oxygen may combine with a certain portion of nitrous gas or with twice that portion, but with no intermediate quantity ", but there is reason to suspect that this sentence may have been added some time after the reading of the paper, which was not published until 1805.