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QAIPMT-2010-Ch-2028: NEET 2010 Chemistry - Class 11 AIPMT-2010-Ch-2028 Solution: 25.3 g of sodium carbonate, \(Na_2CO_3\) is dissolved in enough …
25.3 g of sodium carbonate, is dissolved in enough water to make 250 mL of solution. If sodium carbonate dissociates completely, molar concentration of sodium ion, and carbonate ions, are respectively (Molar mass of = 106 g mol)
Multiple Choice Options
- A 0.955 M and 1.910 M
- B 1.910 M and 0.955 M
- C 1.90 M and 1.910 M
- D 0.477 M and 0.477 M
Step-by-Step Verified Solution
Given in the question that molar mass of Na 2 CO 3 = 106 g
_ Molarity of solution = 25.3 _ 1000 106 _ 250
= 0.9547 M = 0.955 M
Na 2 CO 3 _ 2Na + + C O 3 2 _
[Na + ] = 2[Na 2 CO 3 ] = 2 _ 0.955 = 1.910 M
[ C O 3 2 _ ] = [Na 2 CO 3 ] = 0.955 M