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AP EAMCET202119 Aug 2021Morning ShiftChemistrySome Basic Concepts of ChemistryActual

When 20 g of CaCO 3 is treated with 20 g HCl , the mass of CO 2 formed would be

Options

  1. A10   g
  2. B8 . 8   g
  3. C22 . 2   g
  4. D20   g

Correct answer

B. 8 . 8   g

Step-by-step solution

So according to the question when the reaction takes place CaCO 3 + 2 HCl → CaCl 2 + H 2 O + CO 2 1 mol 2   mol 1   mol 100   g 73   g 44   g Let CaCO 3 be completely consumed in the reaction So that 100   g of CaCO 3 give 44   g of CO 2 Thus, 20   g of CaCO 3 give 44 100   ×   20   g   =   8 . 8   g   CO 2

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