What is the percentage composition of carbon in Ca(HCO 3 ) 2 ? [ Ca
CHEMISTRY
WAEC 2022
What is the percentage composition of carbon in Ca(HCO3)2 ? [ Ca = 40.0, 0= 16.0, C = 12.0, H= 1.0]
- A. 22.2%
- B. 14.8%
- C. 7.4%
- D. 3.7%
Correct Answer: B. 14.8%
Explanation
. % of C in Ca(HCO3)2 Molar mass of Ca(HCO3)2 = 40+(1+12+(16*3))2 =40+(13+48)2 =40+122 =162 C/Ca(HCO3)2 x 100 =12 * 2/162 * 100 =14.8%
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