Essay --

The chemical reaction in the midst of 2 different metals and the juices in the potato generate enough voltage to actually make a clock run or a light bulb a small one. The whole experiment should produce about 1.5 volts DC. You might need to expend more than than one potato but one should power a small light bulb. It works because the phosphoric acid (H3PO4) in the potato. The potato acts more as an electrolyte non really having a role in the chemical reaction itself. This is why its very important to make sure that the pennies and nails neer directly touch each some other inside the potato. Zinc is an active metal which reacts readily with acid to liberate electrons. The acids active grammatical constituent is positively charged hydrogen. So a transfer of electrons takes place between the zinc and the acid. The zinc is oxidized and the acid is reduced to hydrogen gas which you potful see bubbling out around the electrodes. The reaction at the penny electrode depletes the ele ctrons from the copper and attaches them to the hydrogen ions in the phosphoric acid.Researchers found that a potato poached for 8 minutes can make for a battery that produced ten times the power of a raw one. They tried to power a guide light bulb for 40 days and it worked. the cost is around 1 tenth the cost of a typical AA battery. A potato could be utilise to charge a phone and other electronics. This would be good for regions without a power grid.The potato is not a power source it is the action called salt-bridge between the two metals allowing the electron current to move freely across the wire to create electricity. Numerous fruits rich in electrolytes like banana and strawberries can also form this chemical reaction. Besides being rich in phosphoric acid spuds are ideal in that theyre ... ...e electrons away while other metals accept extra electrons. Electrons are subatomic particles that zoom around an atoms center and make up the part of the atom that is negative char ged the lemon batteries is a type of battery called a voltaic battery. These batteries are made up of two different metals which act as electrodes or places where electrons can enter or leave a battery. All voltaic batteries need their metals to be placed in an electrolyte. An electrolyte is a substance that can carry electrical current when turn in water. The tiny bit of salt in your saliva makes your saliva an electrolyte and other sour citric acid does the same thing for lemon juice. Batteries give notice working when there is not enough of the electrolyte to react with the metal or not enough metal left to react with the metal or not enough metal left to react with the electrolytes.