Calculating Volume of Hydrogen Gas at STP
Question:
47.9 mL hydrogen is collected at 26° Celsius and 718 torr. What is the volume occupied at STP?
Answer:
The volume at STP is 41.3 mL.
Explanation:
To solve this question, we can use the combined gas law equation:
P1V1 / T1 = P2V2 / T2
Where:
P1 = 718 torr
V1 = 47.9 mL
T1 = 26°C + 273.15 = 299.15 K
P2 = 760 torr at STP
V2 = ?
T2 = 273.15 K at STP
By substituting the given values into the equation, we can calculate the volume at STP:
718 torr * 47.9 mL / 299.15 K = 760 torr * V2 / 273.15 K
41.3 mL = V2
Therefore, the volume of hydrogen gas at STP is 41.3 mL.