Which of the following sets of chemical data can be successfully utilized to illustrate the Law of M — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

The Law of Multiple Proportions applies when two distinct elements combine to form more than one chemical compound. (A) $CO$ and $CO_2$ involve the same two elements (C and O) forming multiple compounds. (C) The five oxides of Nitrogen clearly demonstrate the law, as the mass of oxygen combining with a fixed mass of nitrogen increases in a simple integer ratio ($1:2:3:4:5$). (B) is incorrect because $MgO$ and $MgCl_2$ involve three different elements (Mg, O, Cl). (D) is incorrect because isotopes represent atomic variations of a single element, not the chemical combination of two different elements.