Jax Charles, 1780, he studied properties of gas and developed the law called Charles Law. The law of gas and the law of gas is called Charles Law, which stated that at constant pressure volume of gas is directly proportional to its Kelvin temperature or B directly proportional to T in Kelvin, or B equal to TQ, where T is constant or B by T, equal to K or constant. When temperature of the gas increases, its volume also increases. We are initially at 20 degree Celsius, the volume of gas is 10 mmQ. When temperature increases to 29 degree Celsius, then volume increases to 10.3. When temperature increases to 42 degree Celsius, volume increases to 10.7. Here by increasing temperature, volume of gas is going increasing. Let B1 is the volume of gas at temperature T1, then B1 by T1 equal to constant. If temperature increases to T2, then volume becomes B2 or B2 by T2 equal to constant. From above equations, B1 by T1 equal to B2 by T2, which is called equation of Charles Law. Here by increasing temperature, volume of gas increases. The curve obtained between B and T2 is going increasing. At constant pressure here, the ratio to the volume and temperature of gas is constant. Application of Charles Law. What air balance is based on Charles Law? Or what air balance rises in air due to Charles Law? Bread and delicious gift based on Charles Law. What volume of air will be expelled from vessels containing 400 ml at 7 degree Celsius? When H2 25 degree Celsius at same pressure, the numerical problem related to Charles Law can be solved as air. Here B1 equal to 400 ml, T1 equal to 7 plus 270 equal to 280 kg. T2 equal to 27 plus 270 equal to 300 kg and B2 equal to 1. From Charles Law, we know that B1 by T1 equal to B2 by T2 or B2 equal to B1 upon T1 into T2, which is equal to 400 upon 280 into 300. And B2 will be 428.5 ml. Limitations of Charles Law. Charles Law is applicable to only ideal gases and Charles Law holds good for real gases only at high temperature and low pressure.