<span>Well # # Drops of Iron Sulfate # Drops of Sodium Hydroxide </span><span> A1 5 45 A2 10 40 A3 15 35 A4 20 30 A5 25 25 A6 30 20 B1 35 15 B2 40 10 B3 45 5 </span> <span>that's for B, because it says "Iron Sulfate".
which is this equation:
FeSO4 (aq) + 2NaOH (aq) Fe(OH)2 (s) + Na2SO4 (aq) </span> <span>FeSO4 (aq) + 2NaOH (aq) Fe(OH)2 (s) + Na2SO4 (aq)
ratio of FeSO4:NaOH is 1:2, so you need to moles of NaOH for every mole of FeSO4. </span> <span>A1-A6 had precipitate, though less ppt every time.
This corresponds to the decrease in the number of NaOH drops
At A2 10/1:40/2 the stoichiometric ratio is equal, so you should've seen the post ppt present. But looking at the picture it doesn't look right. I think you might've labelled them wrong, or there is an error somewhere. This fits micro-plate A better.</span><span> </span>
