The Halogens - exam practice
The Halogens
Question 1 of 10
1 of 10
Chlorine is added to 2 cm3 of a dilute solution of potassium iodide.
The equation for the reaction between chlorine and iodide ions is
Cl2(aq) + 2I-(aq) ➔ I2(aq) + 2Cl-(aq)
Which statement is correct?
Question 2 of 10
2 of 10
Redox reactions occur very frequently in the chemistry of group VII.
Which statement is correct?
Question 3 of 10
3 of 10
Chlorine gas is widely used to treat contaminated water.
Which species present in water when chlorine gas has been added is responsible for killing bacteria?
Question 4 of 10
4 of 10
Why do the boiling points of the halogens increase down the group?
Question 5 of 10
5 of 10
Which statement about the reactions of halogens with halide ions is correct?
Question 6 of 10
6 of 10
Chlorine reacts with cold, dilute, aqueous sodium hydroxide.
Which is a complete list of the products?
Question 7 of 10
7 of 10
Which property increases down group 7?
Question 8 of 10
8 of 10
Which equation shows a redox reaction that does notoccur?
Question 9 of 10
9 of 10
What is the best oxidising agent?
Question 10 of 10
10 of 10
Chlorine is added to 2 cm3 of a dilute solution of potassium iodide.
The equation for the reaction between chlorine and iodide ions is
Cl2(aq) + 2I-(aq) ➔ I2(aq) + 2Cl-(aq)
When the reaction is complete, 10 cm3 of cyclohexane (density = 0.79 g cm-3) is added. The mixture is shaken and left to settle into two layers.
Which description of one of these layers is correct?