Chemistry · Ionic equilibrium: Weak and strong electrolytes, ionization of electrolytes
Assertion BaCO is more soluble in than in plain water. Reason Carbonate is a wea
Assertion BaCO \( _{3} \) is more soluble in \( H N O_{3} \) than in plain water. Reason Carbonate is a weak base and reacts with the \( H^{+} \) from the strong acid causing the barium salt to dissociate.
- A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- C. Assertion is correct but Reason is incorrect
- D. Both Assertion and Reason are incorrect
Step-by-step solution
BaCO3 is sparingly soluble in water due to its low solubility product. In presence of HNO3, the carbonate ions (CO3^2-) act as a weak base and react with H+ ions to form H2CO3, which decomposes into CO2 and H2O, thereby shifting the dissolution equilibrium to the right and increasing solubility. Thus, the assertion is correct. The reason correctly explains this phenomenon because the reaction with H+ removes carbonate ions from solution, causing more BaCO3 to dissociate.
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