Question

Which compound has an element ratio of 1:2:6?

1) Ba(NO₃)₂
2) Na₂SO₄
3) BaSO₄
4) 2NaNO₃

Answer 1

The compound with an element ratio of 1:2:6 is Ba(NO3)2. For the exercise, a sample with 6.75 mol of Na2SO4 has 13.5 moles of sodium atoms, 6.75 moles of sulfur atoms, and 27 moles of oxygen atoms. Therefore, the correct option is 1.

Step-by-step explanation:

The question asks to identify which of the listed compounds has an element ratio of 1:2:6. This ratio refers to the proportions of different types of atoms within a compound. We will analyze each compound to determine which one matches the given ratio.

• Ba(NO3)2: The ratio of elements (Ba:N:O) is 1:2:6.
• Na2SO4: The ratio of elements (Na:S:O) is 2:1:4, which does not match.
• BaSO4: The ratio of elements (Ba:S:O) is 1:1:4, which does not match.
• 2NaNO3: This represents two NaNO3 units combined, so the ratio of elements (Na:N:O) is 2:2:6, which when simplified to its lowest terms is 1:1:3, which does not match.

Hence, the compound with an element ratio of 1:2:6 is Ba(NO3)2.