Ask Question
6 June, 22:31

The hydrogen gas from the reaction of 1.0 g of iron with excess hydrochloric acid is collected in a 15.0 L flask at 25 degrees Celsius. What is the pressure of the hydrogen gas in this flask?

+3
Answers (1)
  1. 6 June, 23:01
    0
    P = 0.03 atm

    Explanation:

    Given dа ta:

    Mass of iron = 1.0 g

    Volume of flask = 15.0 L

    Temperature = 25 °C

    Pressure of hydrogen gas = ?

    Solution:

    Chemical equation:

    4HCl + 2Fe → 2FeCl₂ + 2H₂

    Number of moles of iron:

    Number of moles = mass / molar mass

    Number of moles = 1.0 g / 55.85 g/mol

    Number of moles = 0.02 mol

    Now we will compare the moles of iron and hydrogen.

    Fe : H₂

    2 : 2

    0.02 : 0.02

    Pressure of hydrogen:

    PV = nRT

    P = nRT/V

    P = 0.02 mol * 0.0821. atm. L/mol. K * 298 K / 15 L

    P = 0.5 atm. L / 15 L

    P = 0.03 atm
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “The hydrogen gas from the reaction of 1.0 g of iron with excess hydrochloric acid is collected in a 15.0 L flask at 25 degrees Celsius. ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers