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1 mol of a mixture of CO &CO​2 requires exactly 20gm NaOH in solution for complete conversion of all the CO2 & CO into Na2​CO3. How much NaOH would it require for conversion into Na2CO3​,if the mixture (1 mol) is completely oxidized to CO2?

MonishGayen , 6 Years ago
Grade 12
anser 1 Answers
Arun

Last Activity: 6 Years ago

Let CO = x moles So, CO2= 1-x moles. Now 2NaOH + CO2 ----> Na2CO3 + H2O
2 moles NaOH react with 1 mole CO2
So, 20g NaOH = 0.5 Mole NaOH will react with 1/4 = 0.25 mole CO2 = 1-x moles So, x=0.75moles ie moles of CO = 0.75 moles. 
Now On oxidation CO + 1/2O2 -----> CO2
0.75------------------> CO2(0.75moles)
Total Moles of CO2 = 0.25 + 0.75 = 1mole
1 mole CO2 will react with 2 moles NaOH ie 40 x 2 = 80g.

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