enpathy
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will changing the concentration of substances in a reaction change the ror?
yes
what does a rate equation show
how the concentration of substances within a reaction changes the ror
if the ror is not affected by the concentration of a reactant, when you double the concentration what will happen to the ror, whats the graph to show this and whats the reaction called
nothing, it will stay exactly the same l l ————- l l___________ zero order
if the ror is directly proportional to the concentration of a reactant, when you double the concentration what will happen to the ror, and whats the graph to show this and whats the reaction called
it will double l / l / l / l /___________ first order
if the ror is proportional to the square of the concentration of a reactant, when you double the concentration what will happen to the ror, and whats the graph to show this and whats the reaction called
it will go up 4 x l / l / l / l —/_________ second order
what is the first law of thermodymamics
the Law of Conservation of Energy. energy can be transferred from one system to another in many forms. Also, it cannot be created or destroyed. Thus, the total amount of energy available in the Universe is constant.
whats the second law of thermodynamics
Heat cannot be transfer from a colder to a hotter body. this means natural processes that involve energy transfer must have one direction and all natural processes are irreversible.
what is the third law of thermodymamics
if all the thermal motion of molecules (kinetic energy) could be removed, a state called absolute zero would occur.
what temp is absolute zero
0 Kelvins = -273.15° Celsius
in which direction does temperature flow
from the higher temp object to the lower temp one
which reactions release energy
exothermic ones
which reactions absorb energy
endothermic ones
what is enthalpy
the heat content of any system
what is the equation of enthalpy
energy of a system + (pressure x volume)
what is enthalpy represented by
H
what does ΔH mean
a change in enthalpy
what is the tandard temp
25°C
what is the standard pressure
pressure 1 atmosphere
what is the standard solution concentration
1.0M
positive numbers indicate a ____ reaction
endothermic
negative numbers indicate a ____ reaction
exothermic