Give reasons for the following statements.
(i) It is necessary to specify its temperature and pressure while stating the volume of a gas.
(ii) Gas fills the vessel completely in which it is kept.
(iii) Inflating a balloon seems to violate Boyle's law.
(iv) Mountaineers carry oxygen cylinders with them.
Give reasons for the following statements.
(i) It is necessary to specify its temperature and pressure while stating the volume of a gas.
(ii) Gas fills the vessel completely in which it is kept.
(iii) Inflating a balloon seems to violate Boyle's law.
(iv) Mountaineers carry oxygen cylinders with them.
(i) This is due to the volume of a gas changing with the change in temperature or pressure.
(ii) The molecules in a gas are far apart and are in a state of rapid motion in all possible directions with greater speeds. They move throughout the vessel in which they are kept. Therefore, a gas fills the vessel completely.
(iii) Because of the inflation of a balloon, the volume and pressure inside the balloon are increased while Boyle's law is valid for a definite mass of a gas in a closed container. Thus, in this case, the mass of the balloon is also rapidly increased as the air is blown into the balloon. Hence, it is not violating Boyle's law.
(iv) This is because at higher altitudes (at mountains) the density of oxygen is less. Thus, a lesser volume of oxygen is available for breathing.
(i) This is due to the volume of a gas changing with the change in temperature or pressure.
(ii) The molecules in a gas are far apart and are in a state of rapid motion in all possible directions with greater speeds. They move throughout the vessel in which they are kept. Therefore, a gas fills the vessel completely.
(iii) Because of the inflation of a balloon, the volume and pressure inside the balloon are increased while Boyle's law is valid for a definite mass of a gas in a closed container. Thus, in this case, the mass of the balloon is also rapidly increased as the air is blown into the balloon. Hence, it is not violating Boyle's law.
(iv) This is because at higher altitudes (at mountains) the density of oxygen is less. Thus, a lesser volume of oxygen is available for breathing.
