Chemical Forums
Chemistry Forums for Students => High School Chemistry Forum => Topic started by: crichtonracing on May 04, 2009, 07:56:49 PM
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What do you guys think, is this right from highest to lowest:
Ca(OH)2 - high
KNO3 - low
C6H12O6 - None
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Why? Why did you order them as you did? And is there some other info missing?
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Physical description Electrical conductivity of solution Effect on litmus paper
Colourless solution High No change
White crystals None Red to blue
Colourless solution Low No change
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Sorry, I didn't want to start a new post. Could someone please check my answer to see if it's correct. Here's the question:
2 half-cells in a galvanic cell consist of one iron (Fe) electrode in a solution of iron (II) sulphate (FeSO4) and a silver (Ag) electrode in a silver nitrate solution. Assumimg that the cell is operating as a galvanic cell, State the: oxidation half-reaction, reduction half-reaction, and the overall cell reaction. Remember to eliminate any spectator ions. Describe what will happen to the mass of the cathode and the mass of the anode while the cell is operating.
Fe = Fe^(+2) + 2e-
Ag^(+2) + 2e- = Ag
Fe + Ag^(+2) = Fe^(+2) + Ag
The mass of the Anode decreases as the reacting material becomes aqueous. The mass of the cathode increases as aqueous ions turn into a solid.
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I know you guys don't like *Ignore me, I am impatient*'s but can someone please check my work. I have to hand it in tomorrow.