00:01
Hello students, to mark the given examples as spontaneous or non -spontaneous, the first example is air escaping balloon.
00:09
As air is escaping from high pressure to low pressure, the example is spontaneous.
00:21
The second example is combustion of natural gas which involves the conversion of unstable compound to stable products which are co2 and h2o and it is an exothermic reaction.
00:41
The example is spontaneous reaction.
00:45
Example 3 is car going uphill as it requires external energy to push the car and hence the example is non -spontaneous.
01:02
Fourth example is a hot drink cooling at room temperature as it is the conversion from high temperature to low temperature.
01:20
The example is spontaneous.
01:23
Example 5th is gas diffusing through a room.
01:29
As gas molecules move randomly, they occupy the whole system in which they are kept and hence the diffusion of gases is a spontaneous reaction.
01:43
Sixth example is iron rusting...