Answer to Question #277612 in Chemistry for Aaron

Question

how long does it take for oxygen to mix with hydrogen to make water

Answer 1

Mixtures of hydrogen and oxygen react at a measurable rate only above 300° C, according to the equation 2H₂ + O₂ → 2H₂O. Such mixtures containing 4 to 94 percent hydrogen ignite when heated to 550°–600° C or when brought into contact with a catalyst, spark, or flame.