(i) State one difference and similarity between the Celsius scale and Kelvin scale.
(ii) What are the two fixed points normally used to calibrate the instrument used to measure temperature? Write its value on absolute scale.
(iii) What are STP and NTP? Write its significance.
(i) State one difference and similarity between the Celsius scale and Kelvin scale.
(ii) What are the two fixed points normally used to calibrate the instrument used to measure temperature? Write its value on absolute scale.
(iii) What are STP and NTP? Write its significance.
(i) The temperature on the Kelvin scale is always positive while the temperature on the Celsius scale may be negative, zero, or positive. The magnitude of each degree on the Celsius scale is the same as on the Kelvin scale.
(ii) The two fixed points to calibrate the instrument to measure temperature is
The freezing point of water=0°C=273 K.
The boiling point of water = 100°C-273-100=373K.
(iii) STP stands for Standard Temperature and Standard Pressure. NTP denotes normal temperature and normal pressure.
The standard makes it easier to compare different measurements for gases, such as the moles of gas in a given volume and it is the same all over the world. Therefore, it is very important to choose standard values of temperature and pressure.
(i) The temperature on the Kelvin scale is always positive while the temperature on the Celsius scale may be negative, zero, or positive. The magnitude of each degree on the Celsius scale is the same as on the Kelvin scale.
(ii) The two fixed points to calibrate the instrument to measure temperature is
The freezing point of water=0°C=273 K.
The boiling point of water = 100°C-273-100=373K.
(iii) STP stands for Standard Temperature and Standard Pressure. NTP denotes normal temperature and normal pressure.
The standard makes it easier to compare different measurements for gases, such as the moles of gas in a given volume and it is the same all over the world. Therefore, it is very important to choose standard values of temperature and pressure.
