Answer
Verified
400.8k+ views
Hint: Gases show different solubilities in water. Some gases dissolve in water and form new products by undergoing a chemical reaction. Whereas, some gases do not show this behaviour.
Complete step by step answer:
While producing gases in a laboratory, they are often collected by a technique called water displacement. To do so, the gas to be collected should not dissolve in water.
Ammonia solubilizes easily in water to give ammonium hydroxide. Reaction for this in simple form is \[{\text{N}}{{\text{H}}_3}{\text{ + }}{{\text{H}}_2}{\text{O }} \to {\text{ N}}{{\text{H}}_4}{\text{OH}}\].
\[{\text{CO}}\],\[{{\text{N}}_2}\], and \[{{\text{H}}_2}\]do not dissolve in water and hence can be easily collected by water displacement method.
Hence, both assertion and reason are correct and reason is the correct explanation for assertion. So, option A is correct.
Additional information: In water displacement method, a beaker filled with water is kept upside down in a trough of water. A rubber or glass tube, on one end is attached to a reaction flask while the other end is kept under water in the trough. The set up looks like –
The gas formed in the reaction flask, travels through the tube and displaces the water in the bottle. When the gas completely fills the flask, the flask is fitted with a rubber cork. Since the gas is collected over water, it is mixed with water vapours.
To collect ammonia, a gas jar is connected by a tube to a flask which is giving off gas. The air in the jar is displaced until the gas jar is filled with collected gas. Ammonia solubilised easily and hence collection apparatus should be dry with a drying agent such as calcium.
Note: Depending on whether a gas is soluble in water or not, its collection method is decided. Even though collection over water is most common, for gases which dissolve in water, other methods are also available.
Complete step by step answer:
While producing gases in a laboratory, they are often collected by a technique called water displacement. To do so, the gas to be collected should not dissolve in water.
Ammonia solubilizes easily in water to give ammonium hydroxide. Reaction for this in simple form is \[{\text{N}}{{\text{H}}_3}{\text{ + }}{{\text{H}}_2}{\text{O }} \to {\text{ N}}{{\text{H}}_4}{\text{OH}}\].
\[{\text{CO}}\],\[{{\text{N}}_2}\], and \[{{\text{H}}_2}\]do not dissolve in water and hence can be easily collected by water displacement method.
Hence, both assertion and reason are correct and reason is the correct explanation for assertion. So, option A is correct.
Additional information: In water displacement method, a beaker filled with water is kept upside down in a trough of water. A rubber or glass tube, on one end is attached to a reaction flask while the other end is kept under water in the trough. The set up looks like –
The gas formed in the reaction flask, travels through the tube and displaces the water in the bottle. When the gas completely fills the flask, the flask is fitted with a rubber cork. Since the gas is collected over water, it is mixed with water vapours.
To collect ammonia, a gas jar is connected by a tube to a flask which is giving off gas. The air in the jar is displaced until the gas jar is filled with collected gas. Ammonia solubilised easily and hence collection apparatus should be dry with a drying agent such as calcium.
Note: Depending on whether a gas is soluble in water or not, its collection method is decided. Even though collection over water is most common, for gases which dissolve in water, other methods are also available.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Two charges are placed at a certain distance apart class 12 physics CBSE
Difference Between Plant Cell and Animal Cell
What organs are located on the left side of your body class 11 biology CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
The planet nearest to earth is A Mercury B Venus C class 6 social science CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
What is BLO What is the full form of BLO class 8 social science CBSE