One mole of mixture of CO and CO₂ requires exactly 20gm. NaOH to convert all the CO₂ into Na₂CO₃. How many more grams of NaOH would it require for conversion in to Na₂CO₃, if the mixture is completely oxidised into CO₂

Number of moles of CO₂ and CO in the mixture = 1

Weight of NaOH required to convert all CO₂ into Na₂CO₃ = 20g

moles of CO in the initial mixture = (1 - 0.25)= 0.75

Let us assume that all this CO gets Oxidized to CO₂ and then reacts with NaOH to get converted to Na₂CO₃

X₂ = 0.75 moles

moles of CO₂ formed due to oxiditation of 'CO' = 0.75

= 60g

Wt of NaOH required to neutralize the CO₂ obtained by the oxidation of CO = 60g