1.

0.75 g of oleum sample was diluted with water. If the solution required 62.5 mL of 0.25 N NaOH, the % of free SO3 in the sample will be:

Answer» 0.75 g of oleum sample was diluted with water. If the solution required 62.5 mL of 0.25 N NaOH, the % of free SO3 in the sample will be:


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