Question

11. Potassium combines with two isotopes of chlorine (35c1 and CI) respectively to form two
samples of KCI. Their formation follows the law of:
(A) constant proportions
(B) multiple proportions
(C) reciprocal proportions
(D) none of these​

Answer 1

Explanation:

35Cl and 37Cl combine with potassium to form KCl however their molecular mass are not equal. However, the ratio of masses of the two isotopes is constant. Hence their formation follows the law of multiple proportions. So, the correct answer is “Option B”.