Advertisements
Advertisements
प्रश्न
Give a balanced equation for –
A double decomposition neutralization reaction involving an acid and a base
उत्तर
Neutralization of acid with a base to form salt and water.
\[\ce{\underset{\text{Base}}{NaOH} + \underset{\text{Hydrochloric acid}}{HCl}->\underset{\text{Salt}}{NaCl} + \underset{\text{Water}}{H2O}}\]
\[\ce{\underset{\text{Base}}{Ca(OH)2} + \underset{\text{Acid}}{H2SO4}->\underset{\text{Salt}}{CaSO4} + \underset{\text{Water}}{2H2O}}\]
APPEARS IN
संबंधित प्रश्न
A solid substance P which is very hard is used in the construction of many buildings, especially flooring. When substance P is heated strongly, it decomposes to form another solid Q and a gas R is given out. Solid Q reacts with water with the release of a lot of heat to form a substance S. When gas R is passed into a clear solution of substance S, then a white precipitate of substance T is formed. The substance T has the same chemical composition as starting substance P.
(a) What is substance P? Write its common name as well as chemical formula.
(b) What is substance Q?
(c) What is gas R?
(d) What is substance S? What is its clear solution known as?
(e) What is substance T? Name any two natural forms in which substance T occurs in nature.
What type of reaction is represented by the digestion of food in our body?
What type of chemical reaction is used to extract metals from their naturally occurring compounds like oxides or chlorides?
What is the colour of ferrous sulphate crystals? How does this colour change after heating?
Two metals X and Y form the salts XSO4 and Y2SO4, respectively. The solution of salt XSO4 is blue in colour whereas that of Y2SO4 is colourless. When barium chloride solution is added to XSO4 solution, then a white precipitate Z is formed alongwith a salt which turns the solution green. And when barium chloride solution is added to Y2SO4 solution, then the same white precipitate Z is formed alongwith colourless common salt solution.
(a) What could the metals X and Y be?
(b) Write the name and formula of salt XSO4.
(c) Write the name and formula of salt Y2SO4.
(d) What is the name and formula of white precipitate Z?
(e) Write the name and formula of the salt which turns the solution green in the first case.
Give a balanced equation for –
A thermal decomposition reaction involving heat on limestone [calcium carbonate]
Differentiate between the following:
Thermal decomposition and thermal dissociation.
Photolysis is a decomposition reaction caused by ______
Which one of the following processes involves chemical reactions?
- Identify the gasses evolved at the anode and cathode in the above experimental set up.
- Name the process that occurs. Why is it called so?
- Illustrate the reaction of the process with the help of a chemical equation.
