I answered the first part for you but you may not have liked it. Most (and some prof too I think) believe dissolved CO2 affect the value for M NaOH no matter what.
The anhydride (anhydride means without water) of an acid is a material which produces that acid when added to water.
CO2 + H2O ==> H2CO3.
SO3 + H2O ==> H2SO4
N2O5 + H2O ==> 2HNO3
P2O5 + 3H2O ==> 2H3PO4 (or if you prefer P4O10 + 6H2O ==> 4H3PO4)
CO2 is the anhydride of H2CO3
SO3 is the anhydride of H2SO4
etc.
3. How does dissolved CO2 in distilled water affect the accuracy of the determination of a NaOH solution's concentration?
The CO2 in the distilled water will create a more acidic solution which will affct the determination of NaOH solution's concentration? How is the term acid anhydride applied to this problem?
Would it decrease it the concentration of NaOH solution's concentration?
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