#1: The graph shows the change in concentration of one of the species in the reaction AB -- A + B + heat. If the graph indicates the reaction rate, then the concentration of which species is plotted?

***graph attached inside!***

A. AB

B. A

C. B

***My answer; A. AB

not too sure though.. what do u think? @thomaster :)

Question

#1: The graph shows the change in concentration of one of the species in the reaction AB -->  A + B + heat. If the graph indicates the reaction rate, then the concentration of which species is plotted?

***graph attached inside!***

A.  AB

B.  A

C.  B

***My answer; A. AB

not too sure though.. what do u think? @thomaster :)

anonymous · Answer

graph!

thomaster · Answer

whoa one at a time :P

anonymous · Answer

haha kk :P

thomaster · Answer

the rate goes down. what does that mean?

anonymous · Answer

that the concentration is going down over time?

thomaster · Answer

No that the reaction is going slower

thomaster · Answer

why would it go slower?

anonymous · Answer

ohh i see... so what does that mean? :/

anonymous · Answer

because the concentration is decreasing?

thomaster · Answer

yes the concentration of the ... is decreasing :P

anonymous · Answer

okay, so what would the answer be? ;/

thomaster · Answer

okay imagine you have a pile of sandwiches. you gonna take them apart in 2 pieces. when will this stop?

anonymous · Answer

once you have no more sandwiches?

thomaster · Answer

exactly :D

anonymous · Answer

okay, so the answer is AB?

thomaster · Answer

yep. when the concentration of the reactant is decreasing. the rate (reaction speed) will also decrease too because there is less reactant for the decomposition reaction. With sandwiches this reaction will stop immediatly but in a chemical reaction this decreases slowly.

anonymous · Answer

okay, awesome!! :) thank you so much!! :D