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April 21, 2014

Homework Help: Chemistry

Posted by Odesa on Thursday, November 29, 2012 at 12:11am.

H6P6: Urbium Oxide

First Part of the Question:

Urbium (Ur) is an upscale element found in big cities. Its oxide (UrO2) is not very stable and decomposes readily at temperatures exceeding 66∘ C. The figure below shows how the rate of reaction varies with the concentration of UrO2 at 75∘ C.

The rate r is in units of M⋅s−1 and the concentration c of UrO2 is in units of M (mole⋅L−1). The slope has a value of 1.34 and the intercept has a value of 1.51. What is the order of reaction for the decomposition of urbium oxide?


Second part of the Question:

Select the graph below that best represents how the rate of reaction varies with concentration of urbium oxide at 100∘ C (red) compared with the rate versus concentration at 75∘ C (black).
A)
B)
C)
D)

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