Chemistry
Fill in the blanks:
(a) The average kinetic energy of the molecules of a gas is proportional to the ……………
(b) The temperature on the Kelvin scale at which molecular motion completely ceases is called ……………
(c) If the temperature is reduced to half, …………… would also reduce to half.
(d) The melting point of ice is …………… Kelvin.
Answer
(a) The average kinetic energy of the molecules of a gas is proportional to the absolute temperature.
(b) The temperature on the Kelvin scale at which molecular motion completely ceases is called absolute zero.
(c) If the temperature is reduced to half, volume would also reduce to half.
(d) The melting point of ice is 273 Kelvin.
Related Questions
STP is called standard temperature and pressure. The standard temperature and standard pressure respectively are :
- 273 K and 760 mm
- 0°C and 760 cm
- 273°C and 1 atmosphere
- 373 K and 76 cm
Correct the following statements, wherever necessary.
(a) The volume of a gas is inversely proportional to its pressure at constant temperature.
(b) Volume of a fixed mass of a gas is directly proportional to its temperature, pressure remaining constant.
(c) 0°C is equal to zero Kelvin.
(d) Standard temperature is 25°C.
(e) The boiling point of water is 273 K.
State (i) the three variables for gas laws (ii) S.I. units of these variables.