Ask Question
21 July, 16:59

How many grams of krypton gas will occupy 2.55 liters at 1.25 atm if it occupies 3.75 liters at 0.750 atm at 255 K.

An actual solution would be appreciated rather than the glib comment to the question being asked.

+2
Answers (1)
  1. 21 July, 17:06
    0
    94.9 grams of krypton gas will occupy 2.55 liters at 1.25 atm

    Explanation:

    According to Boyle - Mariotte's law, for a constant temperature system, the pressure changed inversely proportional to the volume. By decreasing the volume of the container, the pressure increases because the molecules collide more against the wall of the container

    This is the Ideal Gas law equation.

    P. V = n. R. T

    In the first case, the gas occupes 0,13 moles

    3,75L. 0,750 atm = n. 0,082L. atm/mol. K. 255K

    (3,75L. 0,750 atm) / 0,082mol. K/L. atm. 255K = n = 0,13 moles

    The new moles that the gas occupes will be higher than 0,13 so according to Boyle-Mariotte's law (at the same T°, we suppose that)

    P1. V1 = P2. V2

    P1. V1 = n1. R. T

    P2. V2 = n2. R. T

    (P1. V1) / R. T = (P2. V2) / n2. R. T

    R and T are the same on both sides so we cancel them.

    (P1. V1) = (P2. V2) / n2

    n2 = (P2. V2) / (P1. V1)

    n2 (2,55. 1,25) / (3,75. 0,750)

    n2 = 1,13 moles

    Molar mass of Kr = 83,80 g/m

    Molar mass. moles = gr - --> 83,80 g/m. 1,13 moles = 94,9 g
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “How many grams of krypton gas will occupy 2.55 liters at 1.25 atm if it occupies 3.75 liters at 0.750 atm at 255 K. An actual solution ...” 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