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प्रश्न
Differentiate between the following:
Neutralization reaction and a precipitation reaction.
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उत्तर
Neutralization reaction and a precipitation reaction
- Neutralization reaction: “is a double decomposition reaction in which acid neutralizes a base and salt and water is formed.”
\[\ce{\underset{\text{Base}}{NaOH} + \underset{\text{acid}}{HCl}->\underset{\text{salt}}{NaCl} + \underset{\text{water}}{H2O}}\] - Precipitation reaction: “is a double decomposition reaction in which one product is ppt.”
\[\ce{\underset{\text{ferrous sulphate}}{FeSO4} + \underset{\text{sodium hydroxide}}{2NaOH}->Na2SO4 + \underset{\text{ppt. direct green}}{Fe[OH]2 v}}\]
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संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Condensation of steam is not a chemical change.
Give an example of a reaction where the following are involved
Electricity
Give an example of a reaction where the following are involved:
Solution
Give reason for the following:
Blue solution of copper sulphate changes to green when a piece of iron is added to this solution.
Give a chemical test to distinguish between the following gases.
NH3 and SO2
Circle the odd one out. Give reason for your choice
______ is not a chemical change.
Classify each of the following, as a physical or a chemical change. Give reasons.
(a) Drying of a shirt in the sun.
(b) Rising of hot air over a radiator.
(c) Burning of kerosene in a lantern.
(d) Change the colour of black tea by adding lemon juice to it.
(e) Churning of milk cream to get butter.
How would you show that the settling of curd is a chemical change?
Write five changes in the characteristics of a substance that can take place during a chemical change.
