Quick Chemistry Reaction Rate Question?

Posted on 2016-04-19 18:42:00 in Chemistry by CHARLEE

A chemist runs a reaction with 15 mL of a 10M solution of Nal. He then takes 5 mL of the 10M Nal solution and adds water until he has a second 15mL sample. He then runs the reaction again with the second sample. Which of these applies? 

A. The reaction rate measured for the second sample will be slower than for the first sample. 
B. The reaction rate measured for the second sample will be faster than for the first sample. 
C. There is no way to compare the reaction rates. 
D. The reaction rate measured for the second sample will be the same as the rate for the first sample.

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