Question

1. For each pair listed, which has more

representative
particles?
a. 1 mol OCl₂ or 1 mol H₂O
b. 0.5 mol O₂ or 0.75 mol H₂
c. 1.5 mol SnO or 3.0 mol SnO₂
d. 0.33 mol Fe2O3 or 0.66 mol FeO

Answer 1

The number of representative particles in a given amount of a substance can be determined by the coefficients in the balanced equation for the reaction involving that substance. The substance with the higher coefficient will have a greater number of representative particles.

Step-by-step explanation:

1 mole of a substance is defined as Avogadro's number of representative particles. Avogadro's number is approximately 6.022 x 10^23.

a. 1 mol OCl₂ has a greater number of representative particles than 1 mol H₂O because the coefficients in the balanced equation for the formation of OCl₂ are greater than those for the formation of H₂O.

b. 0.5 mol O₂ has a greater number of representative particles than 0.75 mol H₂ because 0.5 mol O₂ has a higher coefficient than 0.75 mol H₂ in the balanced equation for the combustion of oxygen and hydrogen.

c. 3.0 mol SnO₂ has a greater number of representative particles than 1.5 mol SnO because 3.0 mol SnO₂ has a higher coefficient than 1.5 mol SnO in the balanced equation for the reaction of tin with oxygen.

d. 0.66 mol FeO has a greater number of representative particles than 0.33 mol Fe2O3 because 0.66 mol FeO has a higher coefficient than 0.33 mol Fe2O3 in the balanced equation for the formation of iron oxide.

Answer 2

See below, please.

Step-by-step explanation:

a. 1 mol H₂O has more representative particles than 1 mol OCl₂. This is because 1 mol of a substance contains Avogadro's number of particles (6.02 x 10²³), and H₂O has two atoms per molecule while OCl₂ has three atoms per molecule. Therefore, 1 mol of H₂O has twice as many particles as 1 mol of OCl₂.

b. 0.5 mol O₂ has more representative particles than 0.75 mol H₂. This is because O₂ is a diatomic molecule, meaning it contains two atoms per molecule, while H₂ only has one atom per molecule. Therefore, even though the quantity of H₂ is greater, O₂ has more particles overall.

c. 3.0 mol SnO₂ has more representative particles than 1.5 mol SnO. This is because SnO₂ has two atoms of oxygen per molecule, while SnO only has one atom of oxygen per molecule. Therefore, for the same number of moles, SnO₂ has twice as many oxygen atoms and thus more representative particles.

d. 0.66 mol FeO has more representative particles than 0.33 mol Fe₂O₃. This is because FeO has one atom of iron per molecule, while Fe₂O₃ has two atoms of iron per molecule. Therefore, for the same number of moles, FeO has twice as many iron atoms and thus more representative particles.