A + B <-> C
if you increase the concentration of A, which way will equilibrium shift?
to the right
100
What speeds up reactions (name them all)?
Catalyst, temperature, pressure, and concentration.
100
Convert 20 Kelvin to Celsius.
-253 Celsius degree
200
How does raising the temperature affect reaction rate?
It speeds up the reaction rate.
200
What does STP stand for?
Standard Temperature and pressure
200
2 H2 (g) + O2 (g) <-> 2 H2O(g)
if you decease the pressure which way will it shift?
To the Left
200
What is activation energy?
Activation energy is energy that is required to trigger a chemical reaction.
200
What happens when you increase the temperature of a balloon full of gas, what happens to the pressure? And why?
The heat will make the balloon expand. The pressure will also increase because the particle inside the balloon is moving faster from the heat which increase the chance of a collision between particles.
300
In an endothermic reaction, what causes it to shift forward (referred to temperature)?
Increase in temperature.
300
What is the STP for pressure?
1 atm
300
Equilibrium occurs when........
when forward and reverse reaction rate equalize.
300
What does the symbol H stand for?
the heat of a reaction for a chemical reaction
300
Name the units for Concentration
Molar
400
In an exothermic reaction, what causes it to shift backward (refereed to temperature)?
Increase in temperature.
400
2 H2 (g) + O2 (g) <-> 2 H2O (g)
If you increase pressure, what side will it shift to?
Right
400
The heat capacity of an object depends in part on its ___
Mass
400
How does concentration affect reaction rate? Why?
If it is on the reactant it increase the reaction rate because it increase the molecule chance to collide with each other.
-OR-
If it is on the product it decrease the reaction rate because the product is trapping the reactants from colliding.
400
define a mole in scientific term.
12 grams of Carbon-12
500
What is absolute zero in Celcius, Kelvin, and Fehrenheit?
-273 C, 0 K, -459 F
500
Convert 1atm to mmHg
What is 760 mmHg
500
if you have 200 ml of 2.0M NaOH and an unknown amount of 1.0M HCl. What is the amount of HCl to neutralize the solution.
400ml of HCl
500
What is unit for "R" in PV=nRT?
atm-L
---------
mol-K
500
The presure of 2 moles of H2O is placed in a sealed container (with the volume of 1 Liter) raised from 2 to 4 atm. What is the only factor that could make this occur? How much of the factor is used during this reaction?
What is increasing in temperature.
PV=nRT (2)(1)=(2)(0.08)(T1)
T1=12.5
(4)(1)=(2)(0.08)(T2)
T2=25 ^T=12.5
Q=mc^T
Q=(2)(4190)(12.5)
Q=104750(kj)