CBSE Class 11-science Answered
What will be the amount of CaCO3 on being passed through 5.6 cubic decimeter of CO2 at NTP through excess of slaked lime [Ca(OH)2].
Asked by mesamit | 31 Jul, 2010, 03:41: PM
Expert Answer
Ca(OH)2 + CO2 ---> CaCO3 +H2O
Since the equation is balanced it means that 1 mole of carbondioxide produces 1 mole of calcium carbonate
Since at NTP 1 mole of gas has a volume of 22.4 l or 22.4 dm3, it means 22.4 dm3 will produce 1 mole of calcium carbonate
Therefore 5.6 dm3 will produce 1X5.6/22.4=1/4 moles
Mass of 1 mole of CaCO3 = 40 + 12 +16 X3 = 100gms
so ¼ moles = 25 gms
Therefore 5.6 dm3 will produce 25 grams of CaCO3
Answered by | 31 Jul, 2010, 04:36: PM
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