gneet

Study Companion

For more NEET and AIIMS mcq on Chemical arithmetic and volumetric analysis Visit www.gneet.com
QUESTION
Q55) 100 mL of 1.0M HCl are mixed with 75 ml of 1.0M Na2CO3. The resulting solution will be... [ CPMT 1991]




SOLUTION

Na2CO3 + 2HCl → 2NaCl + CO2 + H2O
From above one mole of Na2CO3 neutralizes 2 moles of HCl
given 100 milimoles of HCl and 75 milimoles of Na2CO3
Thus HCl can neutralize only 50 milimoles of Na2CO3, thus solution will be basicAnswer: (b)