Question

At 25°C and 730 mm pressure, 380 ml of dry
oxygen was collected. If the temperature is
constant, what volume will the oxygen occupy at
760 mm pressure?
(1) 569 ml
(2) 365 ml
(3) 265 ml
(4) 621 ml​

Answer 1

Answer: (2) 365 ml

Explanation:

To calculate the new volume, we use the equation given by Boyle's law. This law states that pressure is inversely proportional to the volume of the gas at constant temperature.  

The equation given by this law is:

$P_1V_1=P_2V_2$

where,

$P_1$ = initial pressure of gas= 730 mm Hg

$V_1$ =  initial volume of gas = 380 ml

$P_2$ = final pressure of gas= 760 mm Hg

$V_2$ = final volume of gas = ?

Putting values in above equation, we get:

$730\times 380=760\times V_2$

$V_2=365ml$

Thus the final volume of the gas is  365 ml.

Answer 2

Answer:

365 ml

Explanation:

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