Which of the following is a redox reaction?

3Mg (s) + 2AlCl 3 (aq) → 2Al (s) + 3MgCl 2 (aq)

SiO 2 (s) + 2NaOH (aq) → Na 2 SiO 3 (aq) + H 2 O (l)

KCl (aq) + AgNO 3 (aq) → AgCl (s) + KNO 3 (aq)

2NaHCO 3 (aq) → Na 2 CO 3 (aq) + CO 2 (g) + H 2 O (l)

What is the oxidation half-equation in the redox reaction? 2S 2 O 3 2– (aq) + I 2 (aq) → S 4 O 6 2– (aq) + 2I – (aq)

2S 2 O 3 2– (aq) → S 4 O 6 2– (aq) + 2e –

I 2 (aq) + 2e – → 2I – (aq)

2I – (aq) → I 2 (aq) + 2e –

S 4 O 6 2– (aq) + 2e – → 2S 2 O 3 2– (aq)

Which of the following is not a redox reaction?

CH 3 COOH(aq) + NaOH(aq) → CH 3 COONa(aq) + H 2 O(l)

CH 4 (g) + Cl 2 (g) → CH 3 Cl(g) + HCl(g)

Consider the above half-equations: Which statement is correct for the reaction between KMnO 4 (aq) and KI (aq) in acidic conditions?

I – reduces MnO 4 – to Mn 2+ .

MnO 4 – reduces I – to I 2 .

The colour changes from brown to purple.

MnO 4 – is oxidized to Mn 2+ .

Which is a correct statement for the reaction below? 2MnO 4 - (aq) + 6H + (aq) + 5NO 2 - (aq) → 2Mn 2+ (aq) + 5NO 3 - (aq) + 3H 2 O(l)

MnO 4 - is the oxidizing agent and the oxidation number of Mn decreases.

MnO 4 - is the reducing agent and the oxidation number of Mn increases.

NO 2 - is the reducing agent and the oxidation number of N decreases.

NO 2 - is the oxidizing agent and the oxidation number of N increases.

Which represents a redox reaction?

NaH(s)+H 2 O(l)→NaOH(aq)+H 2 (g)

CuCl 2 (aq)+K 2 S(aq)→CuS(s)+2KCl(aq)

HCl(aq)+NH 3 (aq)→NH+4CL − (aq)

Which represents a redox reaction?

NaH(s)+H 2 O(l)→NaOH(aq)+H 2 (g)

CuCl 2 (aq)+K 2 S(aq)→CuS(s)+2KCl(aq)

HCl(aq)+NH 3 (aq)→NH+4Cl −( aq)

Which is a redox reaction?

Zn(s) + 2HCl(aq) → ZnCl 2 (aq) + H 2 (g)

[Cu(H 2 O 4 ] 2+ (aq) + 4Cl − (aq) → [CuCl 4 ] 2− (aq) + 4H 2 O(l)

Ag + (aq) + Cl − (aq) → AgCl(s)

2K 2 CrO 4 (aq) + 2HCl(aq) → K 2 Cr 2 O 7 (aq) + H 2 O(l) + 2KCl(aq)

Which statement is correct for the following reaction? 2ClO 3 − (aq) + SO 2 (aq) + H + (aq) → 2ClO 2 (g) + HSO 4 − (aq)

ClO 3 − is the oxidizing agent and it undergoes reduction.

ClO 3 − is the reducing agent and it undergoes oxidation.

SO 2 is the oxidizing agent and it undergoes oxidation.

SO 2 is the reducing agent and it undergoes reduction.

What are the correct names for KMnO 4 and K 2 Cr 2 O 7 , using oxidation numbers?

Potassium manganate(VII) and potassium dichromate(VI)

Potassium permanganate and potassium dichromate

Potassium manganate(IV) and potassium chromate(VII)

Potassium permanganate(IV) and potassium dichromate(VII)

Consider the following reaction. Sn(s)+4HNO 3 (aq)→SnO 2 (s)+4NO 2 (g)+2H 2 O(g) Which statement is correct?

Sn is the reducing agent because the oxidation number of tin changes from 0 to +4.

HNO 3 is the oxidizing agent because it undergoes oxidation.

HNO 3 is the reducing agent because the oxidation number of nitrogen changes from +5 to +4.

Sn is the oxidizing agent because it undergoes reduction.

Which statement is correct about a reducing agent?

It is oxidized by losing electrons.

It is reduced by gaining electrons.

It is oxidized by gaining electrons.

It is reduced by losing electrons.

Which statement describes a reducing agent?

It is oxidized and loses electrons.

It is reduced and gains electrons.

It is reduced and loses electrons.

It is oxidized and gains electrons.

Consider the following reaction. 2Cr(OH) 3 (s) + 6ClO − (aq) → 2CrO 4 2− (aq) + 3Cl 2 (g) + 2OH − (aq) + 2H 2 O(l) Which statement is correct?

ClO − is the oxidizing agent and the oxidation number of chlorine changes from +1 to 0.

Cr(OH) 3 is the oxidizing agent and the oxidation number of chromium changes from +3 to +6.

Cr(OH) 3 is the reducing agent and undergoes reduction.

ClO − is the reducing agent and the oxidation number of chlorine changes from –1 to 0.

Consider the following reaction: 3(aq) + Cr 2 O 7 2− (aq) + 2H + (aq) → 2Cr 3+ (aq) + 3SnO 2( s) + H 2 O(l) Which statement is correct?

Sn 2+ is the reducing agent because it undergoes oxidation.

Sn 2+ is the oxidizing agent because it undergoes oxidation.

Cr 2 O 7 2− is the oxidizing agent because it undergoes oxidation.

Cr 2 O 7 2− is the reducing agent because it undergoes oxidation.

What happens to the manganese in the following reaction? 2MnO 4 − (aq) + 5H 2 O 2 (aq) + 6H + (aq) → 2Mn 2+ (aq) + 8H 2 O(l) + 5O 2 (g)

It is reduced and its oxidation number decreases.

It is oxidized and its oxidation number increases.

It is oxidized and its oxidation number decreases.

It is reduced and its oxidation number increases.

What happens to iodine when iodate ions, IO 3 − , are converted to iodine molecules, I 2 ?

It undergoes reduction and its oxidation number changes from +5 to 0

It undergoes reduction and its oxidation number changes from −1 to 0

It undergoes oxidation and its oxidation number changes from −1 to 0

It undergoes oxidation and its oxidation number changes from +5 to 0

Topic 9 Redox

11th - 12th Grade

•

86 Qs

Similar activities

B5 AQA Homeostasis

KG - 12th Grade

•

86 Qs

Integumentary Quiz

10th Grade - University

•

87 Qs

Carnivora Review 2022

11th - 12th Grade

•

85 Qs

General Physics 1 Review ( STEM -Tenacity)

12th Grade - University

•

85 Qs

2023 Waves Unit Review

9th - 12th Grade

•

89 Qs

Environmental Science Final Review Quiz

9th - 12th Grade

•

85 Qs

Unit 4 Bio Test Review

9th - 12th Grade

•

90 Qs

Earth Science Final Review 20-21, Part 1

9th - 12th Grade

•

83 Qs

Topic 9 Redox

Quiz

•

Science

•

11th - 12th Grade

•

Practice Problem

•

Hard

Used 20+ times

FREE Resource

86 questions

Show all answers

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The following occurs when metal X is added to Y sulfate solution and Z sulfate solution. (X, Y and Z represent metal elements but not their symbols.)
X (s) + YSO₄ (aq) → XSO₄ (aq) + Y (s)
X (s) + ZSO₄ (aq): no reaction
What is the order of increasing reactivity?

X < Y < Z

Y < X < Z

Z < Y < X

Z < X < Y

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which is the species oxidized and the oxidizing agent in the reaction?
MnO₂ (s) + 4HCl (aq) → MnCl₂ (aq) + Cl₂ (g) + 2H₂O (l)

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which species contains nitrogen with the highest oxidation state?

NO₃⁻

NO₂⁻

NO₂

N₂O

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which compound contains sulfur with an oxidation state of +6?

SO₂

H₂S

H₂SO₃

H₂SO₄

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which is correct for the reaction?
P₄ (s) + 3H₂O (l) + 3OH⁻ (aq) → PH₃ (g) + 3H₂PO₂⁻ (aq)

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which represents a reduction?

SO₃ to SO₄²⁻

Mn₂O₃ to MnO₂

H₂O₂ to OH⁻

CrO₄²⁻ to Cr₂O₇²⁻

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which equation shows oxygen undergoing reduction?

2F₂ + O₂ → 2F₂O

Na₂O + H₂O → 2NaOH

H₂O₂ + 2HI → 2H₂O + I₂

2CrO₄²⁻ + 2H⁺ ⇌ Cr₂O₇²⁻ + H₂O

Create a free account and access millions of resources

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever

or continue with

Microsoft

Apple

Others

Already have an account?

Similar Resources on Wayground

85 questions

Chapter 8: The Hydrosphere

Quiz

•

9th - 12th Grade

86 questions

Special senses

Quiz

•

11th - 12th Grade

86 questions

Mechanical Engineering Service sciences Industries Quiz

Quiz

•

11th Grade

90 questions

Geology Vocabulary

Quiz

•

9th - 12th Grade

85 questions

Try Out UTBK 2024 April A

Quiz

•

12th Grade

87 questions

REID 2ND SEMESTER FINAL STUDY GUIDE

Quiz

•

8th Grade - University

86 questions

IB Chemistry Topic 5

Quiz

•

11th - 12th Grade

89 questions

Unit 2 AOS 1 Chapter 9 Monitoring Pollution

Quiz

•

11th Grade

Popular Resources on Wayground

5 questions

This is not a...winter edition (Drawing game)

Quiz

•

1st - 5th Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

10 questions

Identify Iconic Christmas Movie Scenes

Interactive video

•

6th - 10th Grade

20 questions

Christmas Trivia

Quiz

•

6th - 8th Grade

18 questions

Kids Christmas Trivia

Quiz

•

KG - 5th Grade

11 questions

How well do you know your Christmas Characters?

Lesson

•

3rd Grade

14 questions

Christmas Trivia

Quiz

•

5th Grade

20 questions

How the Grinch Stole Christmas

Quiz

•

5th Grade

Discover more resources for Science

70 questions

Advanced Biology Semester Review

Quiz

•

9th - 12th Grade

19 questions

ionic vs covalent

Quiz

•

9th - 12th Grade

20 questions

Fall Final Review 2

Quiz

•

11th Grade

19 questions

Thermal Energy and Kinetic Theory

Quiz

•

9th - 12th Grade

18 questions

Unit 6: RNA & Protein Vocab

Quiz

•

9th - 12th Grade

12 questions

Fall Final Review 1

Quiz

•

11th Grade

Topic 9 Redox

86 questions

The following occurs when metal X is added to Y sulfate solution and Z sulfate solution. (X, Y and Z represent metal elements but not their symbols.)
X (s) + YSO₄ (aq) → XSO₄ (aq) + Y (s)
X (s) + ZSO₄ (aq): no reaction
What is the order of increasing reactivity?

Which is the species oxidized and the oxidizing agent in the reaction?
MnO₂ (s) + 4HCl (aq) → MnCl₂ (aq) + Cl₂ (g) + 2H₂O (l)

Which species contains nitrogen with the highest oxidation state?

Which compound contains sulfur with an oxidation state of +6?

Which is correct for the reaction?
P₄ (s) + 3H₂O (l) + 3OH⁻ (aq) → PH₃ (g) + 3H₂PO₂⁻ (aq)

Which represents a reduction?

Which equation shows oxygen undergoing reduction?

Which coefficients correctly balance this redox equation?
aFe²⁺(aq) + MnO₄⁻(aq) + bH⁺(aq) →
cFe³⁺(aq) + Mn²⁺(aq) + dH₂O(l)

Which element has the same oxidation number in both species?

Which can describe oxidation?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

Topic 9 Redox

86 questions

The following occurs when metal X is added to Y sulfate solution and Z sulfate solution. (X, Y and Z represent metal elements but not their symbols.)X (s) + YSO4 (aq) → XSO4 (aq) + Y (s)X (s) + ZSO4 (aq): no reactionWhat is the order of increasing reactivity?

Which is the species oxidized and the oxidizing agent in the reaction?MnO2 (s) + 4HCl (aq) → MnCl2 (aq) + Cl2 (g) + 2H2O (l)

Which species contains nitrogen with the highest oxidation state?

Which compound contains sulfur with an oxidation state of +6?

Which is correct for the reaction?P4 (s) + 3H2O (l) + 3OH− (aq) → PH3 (g) + 3H2PO2− (aq)

Which represents a reduction?

Which equation shows oxygen undergoing reduction?

Which coefficients correctly balance this redox equation?aFe2+(aq) + MnO4−(aq) + bH+(aq) → cFe3+(aq) + Mn2+(aq) + dH2O(l)

Which element has the same oxidation number in both species?

Which can describe oxidation?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

The following occurs when metal X is added to Y sulfate solution and Z sulfate solution. (X, Y and Z represent metal elements but not their symbols.)
X (s) + YSO₄ (aq) → XSO₄ (aq) + Y (s)
X (s) + ZSO₄ (aq): no reaction
What is the order of increasing reactivity?

Which is the species oxidized and the oxidizing agent in the reaction?
MnO₂ (s) + 4HCl (aq) → MnCl₂ (aq) + Cl₂ (g) + 2H₂O (l)

Which is correct for the reaction?
P₄ (s) + 3H₂O (l) + 3OH⁻ (aq) → PH₃ (g) + 3H₂PO₂⁻ (aq)

Which coefficients correctly balance this redox equation?
aFe²⁺(aq) + MnO₄⁻(aq) + bH⁺(aq) →
cFe³⁺(aq) + Mn²⁺(aq) + dH₂O(l)