Misc. Flashcards
How do you determine pH from molarity/concentration?
The exponent in the base 10 form = pH
e.g. [0.01] = 10^-2 -> pH = 2
What can HCl interact with to form CO2 gas?
CO32-
What can cause the coloring of certain solutions?
Unfilled energy orbitals. Color can arise as electrons in the lower energy levels absorb visible light to move to higher energy levels.
What account for the lower pressure of real gases compared to ideal gases?
the ideal gas law does not correct for the intermolecular forces between the gas particles.
What are the criteria for an ideal gas?
- The molecules do not liquefy at low temperature.
- The molecules do not experience intermolecular forces.
- The molecules have negligible volume.
What unit for temperature does PV=nRT use?
kelvin
As the temperature at which a reaction takes place is increased what happens to the rate and rate constant?
the reaction rate and the rate constant will increase.
How do you determine the conjugate base of a chemical species?
The conjugate base of a chemical species is simply that species after it has lost an H+. Therefore, the conjugate base of HSO4– is SO42
What are formation constants (Kf)?
Formation constants are equilibrium constants for the formation of complex ions. The larger the equilibrium constant of a reaction, the larger the ratio of products to reactants at equilibrium will be.
pKa lower than pH favors what?
Deprotonation
Which of the following best characterizes the ionization constant of a strong acid?
Ka > 1
What is the formula for determining the number of peptides that can be formed with n amino acids?
n!
e.g. if n=3, 3x2x1 = 6
Will a charged particle moving through an electric field have constant velocity?
No it will accelerate due to the force of the field
What effect does photon frequency have on ejected electrons?
Increased frequency increases kinetic energy
How do you add capacitors in series?
1/Ceq = 1/C1 + 1/C2 …
