What is Charles' law - Charles' law formula - Kisembo academy

In this video i get to explain what charles law is, and how the formula for charles law comes about. I would like to thank all of you that keep sending financial support via   / kisemboacademy   your continued support has enabled us to keep producing these videos. Keep the support coming through and may God bless you more. Charles law, or call it the law of volumes states that the volume of a fixed mass of a gas is directly proportional to its absolute temperature provided that pressure is held constant. In this video, i get to explain Charles law. transcript; 0:00:00.030,0:00:03.449 in this session I will discuss Charles's 0:00:01.800,0:00:07.580 law a law that relates volume and 0:00:03.449,0:00:07.580 temperature of an ideal gas coming up 0:00:09.710,0:00:15.210 Chelsea's law is also known as the law 0:00:12.150,0:00:17.730 of volumes through experimentation it 0:00:15.210,0:00:20.750 was discovered that when a gas is heated 0:00:17.730,0:00:23.760 it expands thereby increasing in volume 0:00:20.750,0:00:25.980 this law was named after Jax Charles a 0:00:23.760,0:00:29.210 scientist that who formulated this law 0:00:25.980,0:00:33.809 in his unpublished work from the 1780s 0:00:29.210,0:00:36.000 however gay-lussac a French natural 0:00:33.809,0:00:37.500 philosopher confirmed this discovery in 0:00:36.000,0:00:39.450 a presentation to the French National 0:00:37.500,0:00:42.350 Institute although he credited the 0:00:39.450,0:00:46.739 discovery to the unpublished work of 0:00:42.350,0:00:49.050 Jack's Charles in the 1780s so this law 0:00:46.739,0:00:51.300 basically describes the relationship 0:00:49.050,0:00:53.399 between volume and temperature and so 0:00:51.300,0:00:56.879 according to Chelsea's unpublished work 0:00:53.399,0:00:58.649 he observed that when you heat a gas its 0:00:56.879,0:01:01.140 temperature will increase and when it's 0:00:58.649,0:01:04.650 temperature increases its volume also 0:01:01.140,0:01:06.180 increases oh it expands so it's the 0:01:04.650,0:01:08.580 other way around that when the 0:01:06.180,0:01:12.390 temperature of a gas reduces the volume 0:01:08.580,0:01:14.220 of that gas will also reduce so if we 0:01:12.390,0:01:16.979 may put this slowly in a modern 0:01:14.220,0:01:20.520 statement we can say that when the 0:01:16.979,0:01:23.369 pressure on this sample of a drag ass is 0:01:20.520,0:01:27.689 held constant the Kelvin temperature and 0:01:23.369,0:01:30.360 the volume will be directly related or I 0:01:27.689,0:01:34.560 can say that the volume of a fixed mass 0:01:30.360,0:01:37.979 of a gas is directly proportional to its 0:01:34.560,0:01:41.220 absolute temperature if it's volume is 0:01:37.979,0:01:44.000 held constant so Charles's law will only 0:01:41.220,0:01:49.020 and only apply under the condition that 0:01:44.000,0:01:51.540 the pressure of that gas is held 0:01:49.020,0:01:52.920 constant now mathematically this is how 0:01:51.540,0:01:54.899 we can state it that the volume of a 0:01:52.920,0:01:57.060 fixed mass of a gas is directly 0:01:54.899,0:01:59.070 proportional to the temperature given 0:01:57.060,0:02:00.750 that pressure is held constant and if I 0:01:59.070,0:02:02.759 remove this proportionality sign it 0:02:00.750,0:02:04.530 means you're supposed to introduce a 0:02:02.759,0:02:07.170 constant of proportionality so we know 0:02:04.530,0:02:09.509 here that volume definitely is going to 0:02:07.170,0:02:12.910 be equal to introduce a constant of 0:02:09.509,0:02:15.250 proportionality let's call it K times 0:02:12.910,0:02:17.200 the temperature T if you have to make K 0:02:15.250,0:02:20.080 the subject of the formula it becomes V 0:02:17.200,0:02:22.150 over T is going to be what okay so 0:02:20.080,0:02:25.510 simply this simply means that as long as 0:02:22.150,0:02:29.020 the pressure is held constant of a gas 0:02:25.510,0:02:31.360 if you get its volume at that 0:02:29.020,0:02:34.020 temperature and you divide the two you 0:02:31.360,0:02:37.060 will always be you will get a constant 0:02:34.020,0:02:39.730 now if we are to compare the same 0:02:37.060,0:02:42.910 substance under two different conditions 0:02:39.730,0:02:46.420 then this expression would be applied in 0:02:42.910,0:02:49.540 this way that v1 over t1 is going to be 0:02:46.420,0:02:56.740 equal to v2 over t2 and that is 0:02:49.540,0:02:58.150 Charles's law for you this brings us to 0:02:56.740,0:02:59.740 the end of this video thanks for 0:02:58.150,0:03:01.270 watching feel free to check out other #Physicsmaths #Physicsmaths