Q. 444.0( 24 Votes )
You are provided with two containers made up of copper and aluminium. You are also provided with solutions of dilute HCl, dilute HNO3, ZnCl2 and H2O. In which of the above containers these solutions can be kept?
The solutions of dilute HCl, ZnCl2 and H2O can be kept in the container that is made of Copper. The Aluminium container can hold dilute HNO3 and H2O.
We can store a solution in a container with which the solution will not react.
When compared to Aluminium, copper is a less reactive metal. Also, Copper is placed below Hydrogen in the activity series. Therefore, it will not react with dilute HCl or H2O; due to which we can store them in the copper container. However, dilute HNO3 being a strong oxidising agent, will react with Copper and hence cannot be stored in a copper container. Copper, being less reactive than Zinc, will not react with ZnCl2.
Aluminium, on the other hand, is highly reactive and can react with the said solutions. However when dilute HNO3 comes in contact with Aluminium, a protective layer of Aluminium Oxide is formed which prevents further reaction. Therefore, dilute HNO3 can be stored in an Aluminium container.
Also, Aluminium does not react with water. So, water can be stored in the Aluminium container as well.
The activity series of metals refers to the list of metals ranked in the decreasing order of their reactivity in order to displace Hydrogen gas from water or acid solutions. It helps us in predicting which metal will displace which metal in Acidic solutions.
Rate this question :
During the reaction of some metals with dilute hydrochloric acid, following observations were made.
i. The temperature of the reaction mixture rises when aluminium (Al) is added.
ii. The reaction of sodium metal is found to be highly explosive.
iii. Some bubbles of a gas are seen when lead (Pb) is reacted with the acid.
Explain these observations giving suitable reasons.Xam idea - Science
State which of the following chemical reaction will take place, giving a suitable reason for each.
Zn(s)+CuSO4(aq)→ ZnSO4(aq) + Cu(s)
Fe(s)+ ZnSO4(aq) → FeSO4(aq)+Zn(s)
Zn(s)+ FeSO4→ ZnSO4+Fe(s)Xam idea - Science
i. Why potato chips manufacturers fill the packet of chips with nitrogen gas?
ii. A student has been collecting silver coins and copper coins. One day she observed a black coating on silver coins and a green coating on copper coins. Which chemical phenomenon is responsible for these coatings? Write the chemical name of black and green coatings.
i. Crystals of copper sulphate are heated in a test for some time.
(a) What is the colour of copper sulphate crystals before heating, and after heating?
(b) What is the source of liquid droplets seen on the inner upper side of the test tube during the heating process?
ii. A metal ‘X’ when dipped in an aqueous solution of aluminium sulphate no reaction is observed whereas when it is dipped in an aqueous solution of ferrous sulphate, the pale green solution turns colourless. Identify metal ‘X’ with reason.Xam idea - Science
What is observed when a solution of sodium sulphate is added to a solution of barium chloride taken in a test tube? Write equation for the chemical reaction involved and name the type of reaction in this case.Science - Board Papers