Though it may participate in a multi step reaction, it appears at the beginning and at the end of the reaction unchanged.
What is a catalyst
100
A value, Q, calculated by substituting equilibrium concentrations with concentrations at any point during a reaction.
What is the reaction quotient?
100
The value resulting from taking the negative log of hydroxide ion concentration.
What is pOH?
100
The movement of an entire particle in one direction.
What is translational motion?
100
The potential difference between the two electrodes if a voltaic cell.
What is cell potential?
200
The order of the reactants and overall order in a reaction whose rate remains unchanged when [A] is doubled and doubles when [B] is doubled.
What is zero order in A, 1st order in B, and 1st order overall?
200
A value of Q>K indicates that the reaction will proceed to equilibrium by forming more of this/these.
What is reactant(s)?
200
The observed decreased ionization of a weak electrolyte when in solution with a strong electrolyte containing a common ion.
What is the common ion effect?
200
An increase in the number of these from a reaction will result in a positive △S.
What is number of gas particles?
200
The force that pushes electrons through the external circuit as a result of the potential difference between voltaic cells, measured in volts.
What is the electromotive force, emf?
300
Often the reason for redefining the concentration of an intermediate with respect to a reactant in the same mechanism.
What is a fast initial step?
300
The use of this cumbersome equation can sometimes be avoided by assuming the change in concentration is negligible relative to the initial concentration.
What is the quadratic equation?
300
Solutions containing weak conjugate acid-base pairs that resist drastic changes in pH when strong acids or bases are added.
What is a buffer solution?
300
"The entropy of a pure crystalline solid at absolute zero (0K) is zero."
What is the third law of thermodynamics?
300
2 H+ atoms that become H2 gas in a half reaction are said to be this.
What is reduced?
400
The type of reaction with an energy profile that has a higher molar enthalpy at the end of the reaction than at the beginning.
What is an endothermic reaction?
400
"If a system at equilibrium is disturbed... the system will shift its equilibrium position to counteract the effect of the disturbance."
What is LeChatlier's Principle?
400
A titration curve of this acid-base composition would start out high on the pH scale and have an equivalence point at pH<7.
What is a weak base-strong acid?
400
The first law of thermodynamics.
What is "energy is conserved"?
400
An electrode designed to produce a standard reference half reaction of 2 H+ to H2 gas under standard conditions.
What is a standard hydrogen electrode?
500
The rate of a first order reaction whose half life is 0.231 s
What is 3 s^-1?
500
According to LeChatlier's principle, increasing temperature will result in increased formation of reactants in this kind of reaction.
What is an exothermic reaction?
500
An equilibrium constant that describes the dissolution of a solid, describing its solubility in water.
What is the solubility product constant?
500
A state function which under standard conditions is the difference of the change in enthalpy and the product of absolute temperature and change in entropy.
What is Gibbs free energy?
500
The standard reduction potential of the cathode reaction less the standard reduction potential of the anode reaction.