Eletronegatividade
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
STEPHANIE ZEFERINO
Used 11+ times
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12 questions
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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:
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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:
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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
What element is being Reduced?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What element is being Oxidized?
I0
H+1
S+4
O-2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What element is being reduced?
I0
H+1
S+4
O-2
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