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Grade 11Physical Chemistry

10 gm of caco3 is reacted with 9.8 gm of h3po4.the volume of co2 in litre at ntp is formed

Profile image of vinay
9 Years agoGrade 11
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1 Answer

Profile image of Vikas TU
9 Years ago
Reaction::
H3PO4 (aq) + 3 CaCO3 (s) → Ca3(PO4)2 (s) + 3 H2O (ℓ) + 3 CO2 (g)
moles of H3PO4 => 9.8/98 => 0.1 mol
moles of CaCO3 =>  10/100 => 0.1 mol.
Ratio with stiochiomteric coefficients is => 0.1/2 for H3PO4 nd 0.1/3 for CaCO3
Since the limiting reagent is => 0.1/3
moles of CO2 => 0.1*3/3 => 0.1
Volume of CO2 => moles*22.4 => 0.1*22.4 => 224/100 =>  2.24 litres