ReciQues-05-Key.pdf_, filename=_ReciQues-05-Key.pdf_, filename=_ReciQues-05-Key.pdf_, filename=_Re

ReciQues-05-Key.pdf_, filename=_ReciQues-05-Key.pdf_, filename=_ReciQues-05-Key.pdf_, filename=_Re

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chem 109 Recitation Problems – Chapter 5 1 1. One mole of nitrogen gas and three moles of hydrogen gas are mixed in a 20.0 L sealed, rigid container. The reaction is allowed to go to completion. If I measured the pressure before the reaction and after the reaction, how would the two values compare to each other assuming there was no change in temperature? The reaction between nitrogen gas and hydrogen gas produces ammonia gas (N 2 (g) + 3H 2 (g) ! 2NH 3 (g)). The final pressure would be A. half (1/2) of the initial pressure. B. two-thirds (2/3)of the initial pressure. C. the same as the initial pressure. D. three-halves (3/2) of the initial pressure. E. double (2) that of the initial pressure. 2. A chemist uses a vacuum pump to remove all the gas from a sample chamber. After a vacuum has been completely established, a pinhole forms in the side of the sample chamber allowing the outside air to enter the chamber. The chemist, not knowing about the pinhole, shuts off the vacuum pump and proceeds to go get some lunch. When the chemist returns from lunch, the pressure inside and outside of the sample chamber are now equal. The chemist, thinking there is still a vacuum present, introduces HCl (g) through a very small inlet into the sample chamber. In this situation, A. both the air molecules and the HCl molecules have undergone effusion.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

ReciQues-05-Key.pdf_, filename=_ReciQues-05-Key.pdf_, filename=_ReciQues-05-Key.pdf_, filename=_Re

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online