Advertisements
Advertisements
प्रश्न
Explain the following reaction with the balanced equation.
Chlorine dissolved in water
Advertisements
उत्तर
Chlorine dissolves in water to form hypochlorous acid and hydrochloric acid.
\[\ce{\underset{\text{Chlorine}}{Cl_{2(g)}} + \underset{\text{Water}}{H2O_{(l)}} -> \underset{\text{Hypochlorous acid}}{HOCl_{(aq)}} + \underset{\text{Hydrochloric acid}}{HCl_{(aq)}}}\]
APPEARS IN
संबंधित प्रश्न
What chemical process is used for obtaining a metal from its oxide?
A zinc ore gave CO2 on treatment with a dilute acid. Identify the ore and write its chemical formula.
How many carats is pure gold? Why is pure gold not suitable for making ornaments?
Name two metals which are always found in combined state.
Name two ores of zinc. Write the names of the chemical compounds present in them and give their chemical formulae.
How is copper extracted from its sulphide ore (copper glance), Cu2S? Explain with equations of the reactions involved.
An important ore of zinc metal is ______.
An element A which is a part of common salt and kept under kerosene reacts with another element B of atomic number 17 to give a product C. When an aqueous solution of product C is electrolysed then a compound D is formed and two gases are liberated.
- What are A and B?
- Identify C and D.
- What will be the action of C on litmus solution? Why?
- State whether element B is a solid, liquid or gas at room temperature.
- Write formula of the compound formed when element B reacts with an element E having atomic number 5.
Which metal can be extracted from the following ore?
Calamine
Give reasons, why aluminum is used in:
In aluminiothermy
Give reasons, why aluminum is used in:
In making ships
Explain the following reaction with the balanced equation.
Sodium aluminate reacts with water
Explain the following reaction with the balanced equation.
Zinc sulphide is heated strongly in excess of air
Explain the following reaction with the balanced equation.
Zinc carbonate is heated strongly in limited supply of air
Explain concept with example/explain with the help of a balanced equation.
Calcination
Explain in brief types of extraction of highly reactive metals according to their reactivity.
Observe the figure and answer the following.

- Write the name of the method.
- What is used as anode and cathode in this method?
- Write the molecular formula and use of cryolite.
- Write anode reaction.
- Write cathode reaction.
Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper, etc. are reduced by using:
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]
Identify the substance oxidised and reduced in the above reaction.
