This question is about Group 2 and Group 17.
Strontium nitrate can be prepared from strontium hydroxide in a neutralisation reaction.
Write the equation for this reaction. State symbols are not required.
The first ionisation energy of the Group 2 elements Mg−Ba\text{Mg}-\text{Ba}Mg−Ba decreases down the group.
Explain why.
On heating, the compound NaClO\text{NaClO}NaClO reacts as shown in the equation:
3NaClO(aq)→2NaCl(aq)+NaClO3(aq) 3\text{NaClO}(\text{aq}) \rightarrow 2\text{NaCl}(\text{aq}) + \text{NaClO}_3(\text{aq}) 3NaClO(aq)→2NaCl(aq)+NaClO3(aq)This reaction is an example of disproportionation.
State what is meant by disproportionation and use oxidation numbers to show that disproportionation has taken place.
What is the systematic name for NaClO3\text{NaClO}_3NaClO3?
Two changes are described below.
For each change,
The reaction of aqueous silver nitrate with aqueous potassium chloride.
Two changes are described below.
For each change,
The change that accompanies the standard enthalpy change of atomisation of bromine.
