remember the chemical reactions involving a transfer a public trans unknown as red ox reaction in a bit ox reaction the substance that accept electrons the copper ions is called the oxidant the substance that donates the electrons zinc metal is called the reductant as the reaction continues the newly formed copper atoms are locked into the latest buildup on the surface at the copper trip the at the same time the sink street progressively disintegrates as it Atoms becomes lnc ions and move into the solution good but isn't there a problem want these ions create an electrical imbalance in the sink solution after all each one carries two positive changes it this is where the filter paper comes in remember it is saturated with the salt solution potassium nitrare it's known as a salt bridge and here's why it it allows on lran's to move between the solutions in the two containers and that's exactly what happens maintaining the balance change it. accoding to our electric series the l in half reaction should produce 0.77 votes and the magnesium half reaction should give 2.3 night vault so we predict that a volmeter will show parading up about 3.15 bolts %uh. in fact the rating is a little less than this and there's a very good reason the 18 or 22 any half reaction depends on the conditions in which the reaction takes place the concentration of the solutions temperature and pressure can all affect the reaction %uh the a not shown in the table old arrived under standard conditions that ease one malar concentration up solutions 25 degrees celsius and one atmosphere pressure f you move significantly away from the standard conditions not only will the a North change even the order of the reactions may change in do these changes mention one example with probably all experience that freezing winter morning when the car wouldn't start on. usually the problem is the battery the low-temperature inhibits the forward reaction significantly reducing the batteries enegy output without sufficient power the engine simply won't start did