Question

Lab on Determining hard water

Not sure if I answered this currently, not completely sure how to explain either.

If a student has a non-zero blank correction, but forgets to include that correction in his/her calculations:? a. Would his/her calculated [EDTA] be correct, too high, or too low? b. Would his/her calculated [Ca] in the unknown be correct, too high, or too low?

Not quite sure if my answers are right:
A. EDTA would be a too high
B. Calculate would be low

Answer 1

I don't know your procedure but you can answer the question by looking at the formula you used and where you have volume, substitute a larger number and see how that affects the answer.

Answer 2

Thanks