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Consider the following reaction equation: CaCO\(_{3(s)}\) + 2HCI\(_{(aq)}\) → CaCl\(_{2(aq)}\) + H\(_2\)O\(_{(l)}\) + CO\(_{2(g)}\). What...

Chemistry
WAEC 2012

Consider the following reaction equation: CaCO\(_{3(s)}\) + 2HCI\(_{(aq)}\) → CaCl\(_{2(aq)}\) + H\(_2\)O\(_{(l)}\) + CO\(_{2(g)}\). What mass of CaCI\(_2\) would be obtained when 25.0g of CaCO\(_{3(s)}\) is reacted with excess HCI\(_{(aq)}\)? [CaCO\(_3 = 100; CaCI\(_2\) = 111]

  • A. 4.00g
  • B. 4.44 g
  • C. 18.9 g
  • D. 27.8 g
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Correct Answer: Option D
Explanation

CaCO\(_3\) + 2HCI → CaCI\(_2\) + H\(_2\)O + CO\(_2\)

100g CaCO\(_3\) will produce 111g CaCI\(_2\)

25g CaCO\(_3\) will produce x ,

x = \(\frac{25 x 111}{100}\)

= 27.75 \(\approxeq\) 27.8g


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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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