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Oxidation and Reduction Quiz

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Questions and Answers

Which of the following is an example of a redox reaction?

CuO (S) + H2 (g)→ Cu(s)+ H2O(l)

Zn( s) + CuSO4( aq) → ZnSO4 (aq) + Cu(s) (correct)

NaCl + H2O → NaOH + HCl

Na(s)+2HCl(aq)→2NaCl(aq)+H2(g)

What is the reducing agent in the reaction Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)?

CuSO4

ZnSO4

Zn (correct)

What is the oxidation number of chlorine in HCl?

-2

-1 (correct)

What is the molar mass of NaCl?

<p>58.5 g/mol</p> Signup and view all the answers

If you have 117 g of NaCl dissolved in 300 ml of solution, what is the concentration of the solution?

<p>0.39 M</p> Signup and view all the answers

Study Notes

Redox Reactions

A redox reaction is a type of reaction that involves the transfer of electrons between two species, resulting in a change in oxidation state.

Zinc and Copper Sulfate Reaction

The reaction Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s) is an example of a redox reaction.
In this reaction, Zn(s) is the reducing agent, as it loses electrons to form Zn2+ ions.

Oxidation Numbers

The oxidation number of chlorine in HCl is -1.

Molar Mass

The molar mass of NaCl is 58.44 g/mol.

Concentration of a Solution

If 117 g of NaCl is dissolved in 300 ml of solution, the concentration of the solution can be calculated using the formula: concentration = mass of solute / volume of solution.
The concentration of the solution would be approximately 1.96 M (moles per liter).

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Description

Test your knowledge of oxidation and reduction with this quiz! Learn about oxidation numbers, electron transfer, and the role of oxygen and hydrogen. Calculate oxidation numbers and identify the oxidizing and reducing agents in chemical reactions. Challenge yourself with examples like CuO + H2 → Cu + H2O and Na + 2HCl → 2NaCl + H