The hydrogen in an eudiometer has a volume of 80 ml when the pressure is 740 mm. what's its volume at standard pressure?
constant temperature...
P1V1=P2V2
V2= P1/P2 * V1
To find the volume of hydrogen at standard pressure, we need to use the concept of Boyle's Law, which states that the pressure and volume of a gas are inversely proportional at a constant temperature.
Boyle's Law equation is:
P1 * V1 = P2 * V2
Where:
P1 = initial pressure
V1 = initial volume
P2 = final pressure (standard pressure)
V2 = final volume (to be determined)
In this case, we know:
P1 = 740 mm (initial pressure)
V1 = 80 ml (initial volume)
P2 = standard pressure
Standard pressure is typically defined as 760 mm of mercury (mmHg).
Let's plug in the values into Boyle's Law equation and solve for V2:
740 mm * 80 ml = 760 mm * V2
Rearranging the equation to solve for V2:
V2 = (740 mm * 80 ml) / 760 mm
V2 = 77.89 ml
Therefore, the volume of hydrogen at standard pressure is approximately 77.89 ml.