Physical Chemistry Questions
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The heat capacity of a substance relates the temperature change with heat transfer and is needed because we can only measure temperature
The first law of thermodynamics is that the internal energy of an isolated system is constant. This means energy is transferred, not created
The number of radioactive nuclei in a material decrease exponentially with time
The rate of a chemical reaction is given by the change in concentration divided by time
If a system is heated and no other processes occur, the change in the internal energy is q
Nuclear reactions may result in the formation of different elements
gamma radiation does not consist of particles. alpha and beta consist of particles
Nuclei with odd numbers of protons and neutrons tend to be the most stable
The half-life of a first order reaction is dependent on the initial concentration
In a galvanic cell, oxidation occurs at the anode, and reduction occurs at the cathode
Standard cell potentials are relative values derived by comparing to a standard
Equilibrium is reached when the rate of the forward reaction is the same as the rate of the reverse reaction
The vapor of an ideal mixture of two volatile liquids is richer than the liquid in the more volatile component
For a solution to be considered saturated, there can be no solid material present
The rate of dissolving increases with increasing temperature, even if the amount of dissolved material does not necessarily increase
The instantaneous rate of reaction increases as the reaction proceeds
The vapor pressure of a liquid increases when a soluble substance is added
The boiling temperature is the temperature at which the vapor pressure exceeds the atmospheric pressure
The vapor pressure of a liquid increases will increase as the temperature of liquid increase
The salts of strong acids do not contribute to the pH of an aqueous solution. The salts of weak acids do contribute the pH of an aqueous solution