Chemistry
Assertion (A): KNO3 and conc. H2SO4 are the reactants for the preparation of nitric acid.
Reason (R): Conc. H2SO4 being a non volatile acid is required to prepare volatile acids.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Nitric Acid
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Answer
Both A and R are true and R is the correct explanation of A.
Explanation— In the laboratory preparation of Nitric acid, nitric acid is obtained by distilling the reactants, conc. sulphuric acid (H2SO4) and potassium nitrate (KNO3). Hence, the assertion (A) is true.
Sulphuric acid is a non-volatile acid and produces volatile nitric acid on reacting with potassium nitrate or sodium nitrate. Hence, the reason (R) is true.
Reason (R) explains why conc. sulphuric acid (H2SO4) and potassium nitrate (KNO3) are used as reactants for the preparation of nitric acid. Hence, reason (R) is a correct explanation of assertion (A).
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Related Questions
The nitrate which does not leave any residue behind on heating is :
- NaNO3
- NH4NO3
- AgNO3
- Ca(NO3)2
On heating zinc nitrate, the products formed are zinc oxide, nitrogen dioxide and oxygen. Zinc oxide is :
P — a black solid
Q — brown when hot, yellow when cold
R — yellow when hot, white when cold
Which of the following is true ?
- Only P
- Only Q
- Only R
- Both Q and R
Assertion (A): Nitric acid prepared in the laboratory is yellow in colour.
Reason (R): Brown gas is used in its preparation.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Catalytic oxidation of Ammonia does not require any external heat in Ostwald process.
Reason (R): Catalytic oxidation of ammonia is an endothermic process.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.