The concentration of sulfate ion in a solution is measured by precipitating the sulfate as BaSO4, filtering the precipitate on ashless filter paper, and heating the filter paper and precipitate in a tared crucible with a Bunsen burner. Which error will result in a sulfate concentration that is higher than the actual concentration?
|(A)||The empty crucible contains a few drops of water when it is tared.|
|(B)||A glass fiber filter is used instead of ashless filter paper.|
|(C)||Some fine precipitate is not captured by the filter.|
|(D)||Some of the sulfate-containing solution spills before the BaCl2 solution is added.|