6. Chemical Quantities & Aqueous Reactions

Which element is being reduced in the following reaction? 

Cr₂O₇^2- + 3 HNO₂ + 5 H⁺ → 2 Cr³⁺ +  3NO₃^- + 4 H₂O

Identify the oxidizing agent and reducing agent from the following redox reaction. 

Ba (s) + Cl₂ (g) → BaCl₂ (aq)

Which element is oxidized and which is reduced in the following reaction?

Hg (aq) + HgCl₂ (aq) → Hg₂Cl₂

Which of the following represents an oxidation-reduction reaction? 

I. PCl₃ (aq) + Cl₂ (g) → PCl₅ (aq) 

II. 2 AgNO₃ (aq) + Cu (s) → Cu(NO₃)₂ (aq) + 2 Ag (s) 

III. CO₂ (g) + 2 LiOH (aq) → Li₂CO₃ (aq) + H₂O (l)

IV. FeCl₂ (aq) + 2 NaOH (aq) → Fe(OH)₂ (aq) + 2 NaCl (aq) 

3 PbO (s) + 2 NH₃ (aq) → N₂ (g) + 3 H₂O (l) + 3 Pb (s)

A substance with the potential to cause reduction in another substance is __________.

A substance with the potential to cause oxidation in another substance is __________.

Which of the following is true about a redox reaction? In a redox reaction, the reducing agent loses electrons. In a redox reaction, the oxidizing agent loses electrons. In a redox reaction, the oxidized species gains electrons. In a redox reaction, the reduced species loses electrons.

Identify the oxidizing agent and the reducing agent for 4Li(s) + O₂(g) → 2Li₂O(s)

What element is being reduced in the following redox reaction? Cr(OH)₄^-(aq) + ClO^-(aq) → CrO₄^2-(aq) + Cl^-(aq)

Which element is oxidized in this reaction? Fe₂O₃ + 3CO → 2Fe + 3CO₂

Which element is reduced in this reaction? 2KMnO₄ + 3Na₂SO₃ + H₂O → 2MnO₂ + 3Na₂SO₄ + 2KOH

Which substance is the oxidizing agent in this reaction? 2CuO + C → 2Cu + CO₂

A chemical reaction that has the general formula of AB → A + B is best classified as what type of reaction?

Identify the oxidizing agent and the reducing agent for 4Li(s) + O₂(g) → 2Li₂O(s).

Which of the following is true about a redox reaction? In a redox reaction, the reducing agent loses electrons. In a redox reaction, the oxidizing agent loses electrons. In a redox reaction, the oxidized species gains electrons. In a redox reaction, the reduced species loses electrons.

The presence of which reactant is the best indicator of an oxidation-reduction reaction?

in a reaction, a molecule loses an electron. this is an example of which type of reaction?

Use the information in the aleks data tab to sort the following chemical species by reducing power.

Cl₂(g)+ 2 F⁻(aq) → F₂(g) + 2 Cl⁻(aq)

Which element is oxidized in this reaction? ZNO + C --> ZN + CO

Which type of reaction has the general formula of AB + CD → AD + CB?

What is it called when a substance loses an electron and oxygen is acquired?

In redox reactions, the reactant that is oxidized is also called the _________.

Oxidation involves the ________, and reduction involves the

In the reaction shown below, which substance is oxidized? 2 Cr(s) + Fe₂O₃(aq) → Cr₂O₃(aq) + 2 Fe(s)

When a(n) _________ agent oxidizes, it causes reduction in another substance.