Question

When measured at 27°C, the volume of Oxygen gas was 400ml, what would be the new volume at 127°C at constant pressure.

Answer 1

Answer:

If pressure is constant then,

V1/T1 = V2/T2

Convert Celsius to Fahrenheit.  

27 C= 300K

And

15C= 288K

Now applying the above formula,

400/300 =V2/288  

V2= 384ml

Contraction in volume= V1-V2

= 400-384

= 16ml

Answer 2

Answer:

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Explanation:

We have

→ Initial temperature = 27 °C

→ Final temperature = 127 °C

→ Initial volume = 400ml

→ Pressure is constant

_____________________

translate convert to unit of initial and final volume from °C to K

Initial Volume :-

Since 0°C = 273 K

∴ 27°C = 273 + 27

= 300K

Final Volume :-

Since 0°C = 273 K

∴ 127°C = 273 + 127

= 400K

_______________________

Now according to Charle's law, we know that

Initial Volume / Initial Temperature = Final Volume (V') / Final Temperature

400/300 = V'/400

4/3 = V'/400

V' = (400×4)/3

V' = 1600/3

V' = 533.33mL