Chemical Reactions and Equations
$${ Fe }_{ 2 }{ O }_{ 3 }+2Al\rightarrow { Al }_{ 2 }{ O }_{ 3 }+2Fe$$ The above reaction is an example of a :
What happens when a piece of silver metal is added to copper sulphate solution?
When a piece of silver metal is added to copper sulphate solution then no reaction takes place because silver (Ag) is less reactive that copper (Cu) and hence, it cannot displace copper from its solution.
$${ Fe }_{ 2 }{ O }_{ 3 }+2Al\rightarrow { Al }_{ 2 }{ O }_{ 3 }+2Fe$$ The above reaction is an example of a :
In the refining of silver, the recovery of silver from silver nitrate solution involved displacement by copper metal. Write down the reaction involved.
Oil and fat containing food items are flushed with nitrogen. Why?
What happens when a piece of aluminium metal is added to dilute hydrochloric acid?
You are provided with two containers made up of copper and aluminium. You are also provided with solutions of dilute HCl, dilute $$H N O_{3}, Z n C l_{2}$$ and $$H_{2} O .$$ In which of the above containers these solutions can be kept?
a) Why are decomposition reactions called the opposite of combination reactions? Explain with equations of these reactions. b) Express the following facts in the form of a balanced chemical equation: "When a strip of copper metal is placed in a solution of silver nitrate, metallic silver is precipitated and a solution containing copper nitrate is formed".