a test tube is filled eith hydrogen is left open for an hour as shown in the figer what happen when burnnin
Answers
Explanation:
neneknejeknenfnfngkfjfkgkgktktktkykyktkkemmmmmmmm
Answer:
hope it helps you plz mark me brilliantest
Explanation:
We may agree that during the combustion, regardless if the one of wood, gasoline, or in your example, hydrogen gas, is an exothermic reaction. In a simplified view, products of these reaction are gaseous water; in the processes burning organic matter varying relative amounts of carbon monoxide and carbon dioxide are to be considered, too.
The gaseous products formed take up a volume, much more than their starting materials in the condensed state (liquid, or solid). Because of the local heat, these gases aim to expand rapidly. In contrast to burning wood for a bonfire, the volume offered by a test tube is confined except for the mouth of the test tube, where a decompression to reach ambient pressure may take place. This small scale explosion initially occurs at the interface of air's oxygen at the mouth of your test tube filled with hydrogen, yet this frontier actually propagates up to the closed end of the test tube, too. Sometimes, especially with lengthier test tubes, this may be seen from the outside, too.
The combustion of hydrogen is worth a special note, because -- as correctly spot by airhuff -- formally there is volume contraction along
2H2+O2⟶2H2O
which is more than compensated by the thermally caused expansion of the gaseous water.
Gasoline driven combustion engines work by the same principle; spark plugs locally ignite a mixture of finely dispersed fuel and air, triggering a rapid combustion (explosion) where the reaction products again aim to expand. As they operate at a larger scale as the test tube experiment, the generated sound is much more intense, and these vehicles need a silencer, too.