OXIDATION ELECTRON TRANSFER which phrase best describes oxidation?

gain of cations

gain of electrons

loss of electrons

loss of cations

Loss of electrons

Explanation:

Oxidation occurs in a redox reaction where electrons are transferred from one reactant to another.

The loss of electrons is called oxidation.The gaining of electrons is called reduction.The reactant that causes oxidation is called the oxidizing agentThe reactant that causes reduction is called the reduction agent

1) Answer is: the percent yield of the reaction is 84.5%.

Balanced chemical reaction: 2SO₂ + 2H₂O + O₂ → 2H₂SO₄.

V(SO₂) = 67.2 L; voulume of sulfur dioxide.

Vm = 22.4 L/mol; molar volume.

m(H₂SO₄) = 250 g; actual mass of sulfuric acid.

n(SO₂) = V(SO₂) ÷ Vm.

n(SO₂) = 67.2 L ÷ 22.4 L/mol.

n(SO₂) = 3 mol; amount of sulfur dioxide.

2) From balanced chemical reaction: n(SO₂) : n(H₂SO₄) = 2 : 2 (1 : 1).

n(H₂SO₄) = n(SO₂).

n(H₂SO₄) = 3 mol; amoun of sulfuric acid.

M(H₂SO₄) = 98.08 g/mol; molar mass of sulfuric acid.

m(H₂SO₄) = n(H₂SO₄) · M(H₂SO₄).

m(H₂SO₄) = 3 mol · 98.08 g/mol.

m(H₂SO₄) = 294.24 g; theoretical mass of sulfuric acid.

Theoretical yield is the maximum amount of product that can be produced from limiting reactant and actual yield is a product that is obtained by experimentation.

the percent yield = actual yield / theoretical yield.

the percent yield = 250 g ÷ 294.24 g · 100%.

the percent yield = 84.5 %.