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What mass of 95% pure CaCO3 will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction ?
CaCO3(s) + 2HCl(aq) -» CaCl2(aq) + CO2(s) + H2O(l) [Calculate upto second place of decimal point]
  • a)
    1.32 g
  • b)
    3.65 g
  • c)
    9.50 g
  • d)
    1.25 g
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
What mass of 95% pure CaCO3 will be required to neutralise 50 mL of 0....

weight of CaCO3 (pure) = mole xmol. wt
= 0.0125 x 100 = 1.25 g
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Community Answer
What mass of 95% pure CaCO3 will be required to neutralise 50 mL of 0....
The balanced equation for the reaction between CaCO3 and HCl is:

CaCO3(s) + 2HCl(aq) -> CaCl2(aq) + H2O(l) + CO2(g)

From the equation, we can see that 1 mole of CaCO3 reacts with 2 moles of HCl.

To find the number of moles of HCl in the solution, we can use the equation:

moles of HCl = concentration of HCl × volume of HCl solution

moles of HCl = 0.5 M × 0.05 L = 0.025 moles

Since 1 mole of CaCO3 reacts with 2 moles of HCl, we would need half the number of moles of CaCO3:

moles of CaCO3 = 0.025 moles / 2 = 0.0125 moles

To find the mass of CaCO3 required, we can use the equation:

mass of CaCO3 = moles of CaCO3 × molar mass of CaCO3

The molar mass of CaCO3 is calculated by adding the atomic masses of calcium (Ca), carbon (C), and three times the atomic mass of oxygen (O):

molar mass of CaCO3 = atomic mass of Ca + atomic mass of C + 3 × atomic mass of O
= 40.08 g/mol + 12.01 g/mol + 3 × 16.00 g/mol
= 100.09 g/mol

mass of CaCO3 = 0.0125 moles × 100.09 g/mol
= 1.25125 g

Therefore, approximately 1.25 grams of 95% pure CaCO3 will be required to neutralize 50 mL of 0.5 M HCl solution.
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What mass of 95% pure CaCO3 will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction ?CaCO3(s)+ 2HCl(aq) -» CaCl2(aq) + CO2(s) + H2O(l) [Calculate upto second place of decimal point]a)1.32 gb)3.65 gc)9.50 gd)1.25 gCorrect answer is option 'A'. Can you explain this answer?
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What mass of 95% pure CaCO3 will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction ?CaCO3(s)+ 2HCl(aq) -» CaCl2(aq) + CO2(s) + H2O(l) [Calculate upto second place of decimal point]a)1.32 gb)3.65 gc)9.50 gd)1.25 gCorrect answer is option 'A'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about What mass of 95% pure CaCO3 will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction ?CaCO3(s)+ 2HCl(aq) -» CaCl2(aq) + CO2(s) + H2O(l) [Calculate upto second place of decimal point]a)1.32 gb)3.65 gc)9.50 gd)1.25 gCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What mass of 95% pure CaCO3 will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction ?CaCO3(s)+ 2HCl(aq) -» CaCl2(aq) + CO2(s) + H2O(l) [Calculate upto second place of decimal point]a)1.32 gb)3.65 gc)9.50 gd)1.25 gCorrect answer is option 'A'. Can you explain this answer?.
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