Ask questions and get helpful responses.

chemistry

Consider the reaction, C2H4 (g) + H2 (g)- C2H6 (g) where -137kJ of heat is released.
How many kilojoules are released when 55.3g of C2H4 reacts?

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
  1. 137 kJ heat released for 28 g C2H4. You have 55.3g; therefore, heat released will be 137 kJ x (55.3/28) = ??
    Another way to look at it.
    This is 137 kJ heat released per mol C2H4.How many moles do you have?
    That is 55.3/28 = 1.975 moles
    Then 1.37 kJ/mol x 1.975 mol = ??

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  2. 480kj

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  3. 270. kJ are released.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Respond to this Question

First Name

Your Response

Still need help? You can ask a new question.