Can you decrease the acidity of concentrated H2SO4 by adding Na2SO4?
Answer:
The acidity, or the pH range of the concentrated H2SO4, is dependent on the concentration of H+ ions in the acid and also the degree of dissociation of the acid. Hence it's not at all affected by other factors.
Since Na2SO4 is a solid, dissolving it and adding it to H2SO4 will not decrease the acidity. If argued that due to common ion effect of SO4`, the concentration of H+ is reduced and hence the acidity, it will not generally be accepted because H2SO4 ionizes completely. Hence it cannot reduce the acidity as mentioned.
maybe to an extremely small degree as on hydrolysis the should neutralize the effects of one and other but sodium hydroxide being just a little stronger as a alkali than H2SO4 is as an acid will have an extremely minute effect on the acidity of the Sulphuric acid.
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