you have 10mL of saturated calcium hydroxide and you add 40 drops of phosphoric acid to it. you mix the solution after each drop is added. What is the conductivity of the solution after the drops are added?
2007-03-03 20:13:52 · 6 answers · asked by Marvin G 1 in Science & Mathematics ➔ Chemistry
Phosphoric acid and calcium hydroxide react to make water and calcium phosphate.
2 H3PO4 + 3 Ca(OH)2 6 H(OH) + Ca3(PO4)2
2007-03-03 20:52:25 · answer #1 · answered by rhea 4 · 0⤊ 0⤋
Calcium hydroxide isn't very soluble, and calcium phosphate even less so. You are replacing a moderate electrolyte with a very poor one. At the point of neutralisation, you have just a very dilute solution of calcium phosphate (with a precipitate) and water. So the conductivity will fall to a mimimum, and rise once this point has been passed, due to excess phosphoric acid being added.
2007-03-03 20:24:36 · answer #2 · answered by Gervald F 7 · 0⤊ 0⤋
well calcium hydroxide is a powerful base so the conductivity of the solution should be high. since even when you add the acid your turn it into a salt, the conductivity would not chnage much evn when the acid is in excess. maybe it might be lower or mopre depending on the conductance of the solution at different concentrations of the individual compounds. hope i help:)
2007-03-03 20:33:23 · answer #3 · answered by Anonymous · 0⤊ 1⤋
I have not taken gen chem in a while... but I believe you get:
H20 and CaP2(salt)- The salt doesnt sound right, so the reaction may not occur at all. Good luck buddy. And have fun when you take organic chemistry past the first semester!
2007-03-03 20:37:01 · answer #4 · answered by giggssoccer83 3 · 0⤊ 0⤋
You end up with a salt so I'm guessing 0. I could be wrong, I have been before.
2007-03-03 20:23:16 · answer #5 · answered by butch a 2 · 0⤊ 0⤋
nothing
2007-03-03 20:26:54 · answer #6 · answered by dilbert v 2 · 0⤊ 1⤋