Which Of The Following Accurately Describes The Effects Of Temperature Changes On Solids?
Temperature and gas calculations
Temperature can be measured using the Celsius and Kelvin scales. Gas pressure increases with temperature. Equations explicate the relationship between pressure, temperature and volume in gases.
Volume and pressure level in gases – the gas laws
Boyle's constabulary
Decreasing the book of a gas increases the pressure of the gas. An example of this is when a gas is trapped in a cylinder by a piston. If the piston is pushed in, the gas particles will take less room to move every bit the volume the gas occupies has been decreased.
Because the volume has decreased, the particles will collide more frequently with the walls of the container. Each time they collide with the walls they exert a force on them. More collisions hateful more force, so the force per unit area volition increment.
When the volume decreases, the pressure increases. This shows that the pressure of a gas is inversely proportional to its volume.
This is shown by the following equation - which is often called Boyle's law . Information technology is named after 17th century scientist Robert Boyle .
P 1 V 1 = P 2 V ii
where:
P ane is the initial pressure
V 1 is the initial volume
P 2 is the concluding pressure
V 2 is the final book
It can besides be written as:
pressure 1 × volume ane = pressure 2 × book 2
Annotation that volume is measured in metres cubed (m iii ) and pressure in pascals (Pa).
It means that for a gas at a constant temperature, pressure × volume is too constant. So increasing pressure from pressure 1 to pressure 2 means that volume i will change to book 2 , providing the temperature remains abiding.
- Question
-
A sealed syringe contains 10 × 10 -6 g 3 of air at i × ten 5 Pa . The plunger is pushed until the volume of trapped air is 4 × 10 -half dozen m 3 . If at that place is no change in temperature what is the new pressure of the gas?
-
P 1 = 1 × x 5 Pa
V 1 = ten × 10 -half-dozen m iii
5 2 = 4 x 10 -half dozen m 3
P 1 5 1 = P 2 V two
Therefore:
\[p_{two} = \frac{p_{1}{V_{1}}}{V_{2}}\]
\[p_{2} = \frac{{1 \times 10^{5} \times ten \times 10^{-6}}}{4 \times 10^{-6}}\]
P ii = 2.5 × 10 five Pa
The new pressure in the syringe is 2.5 × 10 5 Pa
Charles' law
Charles' police describes the effect of changing temperature on the volume of a gas at constant force per unit area. Information technology states that:
\[volume_{1} = volume_{2} \times \frac{temperature_{ane}}{temperature_{two}}\]
\[V_{1} = V_{2} \times \frac{T_{ane}}{T_{2}}\]
where:
5 1 is the initial volume
V 2 is the final book
T 1 is the initial temperature
T 2 is the final temperature
Note that volume is measured in metres cubed (m 3 ) and temperature in kelvin (K).
This ways that if a gas is heated upward and the pressure does not change, the volume volition. So for a stock-still mass of gas at a constant pressure, book ÷ temperature remains the same.
Source: https://www.bbc.co.uk/bitesize/guides/zc4xsbk/revision/3
Posted by: garberherrinfold.blogspot.com
0 Response to "Which Of The Following Accurately Describes The Effects Of Temperature Changes On Solids?"
Post a Comment