A student thinks he remembers reading that if you double the temperature of an ideal gas, its pressure doubles. He is given a problem where he has an ideal gas at 25.0°C and 2.5 atm. He is asked what the temperature must be raised to in order to double the pressure to 5.0 atm. He answers, “50.0°C, of course.” Why is he wrong? What lesson should he learn about using the ideal gas law? What is the temperature increase in Celsius degrees that will double the pressure?