Eletronegatividade

Eletronegatividade

11th Grade

12 Qs

quiz-placeholder

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Eletronegatividade

Eletronegatividade

Assessment

Quiz

Chemistry

11th Grade

Hard

Created by

STEPHANIE ZEFERINO

Used 11+ times

FREE Resource

12 questions

Show all answers

1.

OPEN ENDED QUESTION

1 min • 1 pt

Tungsten can be extracted from its oxide, WO3, by heating it with carbon monoxide. Carbon dioxide is produced as shown below.


WO3+ 3CO → W + 3CO2


Explain, in terms of oxidation state, why tungsten in tungsten oxide has been reduced.

Evaluate responses using AI:

OFF

2.

OPEN ENDED QUESTION

1 min • 1 pt

In a reaction, MnO4- is converted to Mn2+. Explain, in terms of electron transfer, if manganese (Mn) is oxidised or reduced.

Evaluate responses using AI:

OFF

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

WRITE THIS OUT ON PAPER, YOU MAY USE THE ANSWER TO THIS PROBLEM AGAIN IN ANOTHER QUESTION:

Consider the following REDOX reaction:

Cl2(g) → ClO(aq) + Cl(aq) (basic solution)

Which species is the result of oxidation?

Cl

ClO

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Substance X changes aqueous potassium iodide from colourless to brown and changes aqueous potassium manganate(VII) from purple to colourless. Which statement correctly describes X?

It is an oxidising agent only.

It is a reducing agent only.

It is an oxidising agent and a reducing agent.

It is neither an oxidising agent nor a reducing agent.

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image
What element is being Reduced?
N
H
O
S

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What element is being Oxidized?

I0

H+1

S+4

O-2

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What element is being reduced?

I0

H+1

S+4

O-2

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