aqa chem practical - electrochemistry and emf

ok basically im clueless about this topic...i doubt it will come up in implementing...but its a possible for a plan./...can anyone help??

Reply 1

matthew.swallow

Neptune, God of the Seas

ok basically im clueless about this topic...i doubt it will come up in implementing...but its a possible for a plan./...can anyone help??

I doubt very much this will be our plan. The reason being that they can not ask you to do number manipulation before hand. However:-

Circuit consists of two halves. In each half the metal ions are in contact with the metallic element. Each metal is connected to a crocodile clip and this clamped in place by passing the electron through a clamped cork. The salt bridge is a conducting piece of filter paper soaked in a solution of potassium nitrate or potassium chloride. However chloride precipitates may interfere with the experiment. A thermostatically controlled water bath should be used to keep temp constant- thus keeping rate constant and not affecting resistance of the wire. Remember that standard conditions for this cell are a temperature of 298K, solutes at a concentration of 1 M, and gases at a pressure of 1 bar (100kPa.)