Question

What weight of caco3 must be decomposed to produce the sufficient quantity of co2 to convert 21.2kg of na2co3 completely in nahco3?

Answer 1

Answer:

20kg or20000g

Explanation:

We need to approach this question reverse....so we have a reaction...

Na2CO3 +H2O +CO2-----2NaHCO3

from this,using stoichiometry,we get moles of Na2CO3

as 200 moles which is equal to moles of co2 required....So now we have another reaction...

CaCO3-----CO2+CaO

From these,similiarly we get moles of caco3 which are same as moles of CO2=200

Weight of CaCO3 =200*100=20 kg

Hope ur doubt is cleared.....