Q7. If two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in a whole-number ratio. Is this statement true? If yes, according to which law? Give one example related to this law.
Answer. If two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in a whole-number ratio. Yes the statement is true. According to the law of multiple proportions. Consider the example H2 + O2 → H2O H2 + O2 → H2O2 Here masses of oxygen, (i.e., 16g in H2O and 32g in H2O2) which combine with a fixed mass of hydrogen (2g) are in the simple ratio i.e., 16 : 32 or 1 : 2.
