NEETChemistrySolutions
Given below are two statements; one is labelled as Assertion (A) and the other is labelled as Reason(R). Assertion (A) : The molarity and normality of a solution of ( K ₂ CO ₃ ) are same. Reason (R) : Normality is the product of molarity and valency factor. In the light of the above statements, choose the most appropriate answer from the options given below :
Options
- ABoth (A) and (R) are correct but (R) is not the correct explanation of (( A ) ).
- B(A) is correct but (R) is not correct.
- C(A) is not correct but (R) is correct.
- DBoth (A) and (R) are correct and (R) is the correct explanation of (A).
Correct answer
C. (A) is not correct but (R) is correct.
Step-by-step solution
- Assertion (A): "The molarity and normality of a solution of ( K ₂ CO ₃ ) are the same." This is not correct. Molarity measures the concentration of a solution in moles per liter, while normality measures the concentration based on reactive units (equivalents) in a solution. For ( K ₂ CO ₃ ), which dissociates into 2 potassium ions ( ( K ⁺ )) and 1 carbonate ion ( ( CO ₃ ²⁻ )), the normality would be different from the molarity. - Reason (R): "Normality is the product of molarity and valency factor." This is corre