many car batteries contain an aqueous solution of sulfuric acid , the owner´s manual states that there is a danger of hydrogen gas being produced during the charching process.
What would be the source of the Hydrogen?
If hydrogen is produced would another gas be produced at the same time? If so, what gas would be?
2007-04-16 09:53:43 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Electrical energy is put in to the lead-acid battery to re-charge it. This consists of a DC voltage of about 15V, which is higher than the battery's nominal 12V. This is fine as long as the electrical energy can do the lead chemistry that is required. Unfortunately, when the battery is fully charged, the extra electrical energy can go on to produce hydrogen gas from the negative terminal and oxygen from the positive terminal - the normal electrolysis products of sulphuric acid. This is an explosive mixture, of course!
2007-04-17 09:35:01 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋