Question

get it? state the law of definite proportions. analyze the law of definite proportions by indicating whether the following examples are for identical or different compounds. description analysis compound 1 consists of 24g of na, and 36g of cl. compound 2 has 36g of na and 54g of cl. compound 3 has 10.00g of lead and 1.55g of sulfur. compound 4 has 10.00 g of lead, 1.55g of sulfur, and 1.55g of carbon.

Explanation:

The law of definite proportions states that a given chemical compound always contains its component elements in fixed ratio (by mass) and does not depend on its source and method of preparation. For the first pair of sodium - chlorine compounds:

• For Compound 1, the ratio of Na to Cl is $\frac{24}{36}=\frac{2}{3}$. For Compound 2, the ratio of Na to Cl is $\frac{36}{54}=\frac{2}{3}$. Since the ratios are the same, they are identical compounds.
• For the second pair of lead - sulfur compounds:
• Compound 3 has lead and sulfur only. Compound 4 has lead, sulfur and carbon. Since Compound 4 has an additional element (carbon), they are different compounds.

Answer:

1. Identical compounds
2. Different compounds