THE ELECTROLYSIS OF WATER The unique way in which the hydrogen atoms are attached to the oxygen atom causes the hydrogen side of the molecule to have a positive charge and the
oxygen side to have a negative charge. The + Hydrogen atoms are attracted to the - charged terminal, and are
pulled off the H2O molecule, filling the right tube in this diagram with Hydrogen gas. The - Oxygen atoms are
attracted to the + charged terminal, and are pulled from the H2O molecule, filling the left tube in this diagram with Oxygen gas.
H2O consists of 2 H atoms and 1 O atom so twice as much Hydrogen gas will be produced
2H2O 2H2 + O2 Faraday's 1st Law of Electrolysis - The mass of a substance altered at an electrode during electrolysis is directly proportional to the quantity of electricity transferred at that electrode. Quantity of electricity refers to the quantity of electrical charge, typically measured in coulomb.
IN OTHER WORDS Stronger battery = more electricity = more gas produced (and faster, too) Faradays laws continued Faraday's 2nd Law of Electrolysis - For a given quantity of electricity (electric charge), the mass of an elemental material altered at an
electrode is directly proportional to the element's equivalent weight. IN OTHER WORDS Since there are twice as many Hydrogen atoms as Oxygen atoms in 2H2O, TWICE as much HYDROGEN gas will be produced as Oxygen gas
IS THIS A PHYSICAL OR A CHEMICAL CHANGE? WHAT EVIDENCE SUGGESTS THIS? 2H2O 2H2 + O2 WHAT DOES THE FORMULA ABOVE
SUGGEST ABOUT THE REACTION? HOW CAN WE BE SURE? HOW DO WE IDENTIFY THE GAS???? FLAME AND
GLOWING CINDER TESTS HYDROGEN GAS CAN EXPLODE WITH A POP, AND CAN EMIT A BRIEF FLASH OF LIGHT. SHOULD WE TRY IT????? Are you SURE?????
Its REALLY DANGEROUS!!!! Its VERY LOUD AND SCARY!!!! ARE YOU SURE???
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