ACS final Flashcards
Which pH value indicates the most basic solution?
7,8,3,11,5
11- over 7=basic, under 7=acidic
To be nonpolar a molecule must have either:
nonpolar bonds, as in H2 or F2, or slightly polar bonds and a symmetric shape as in CH4.
The volume of a given mass of an ideal gas at constant pressure is
directly proportional to the Kelvin temperature.
Under which conditions does a real gas behave most nearly like an ideal gas?
low pressure and high temperature
The atomic number of any atom is equal to the number of:
protons in the atom, only
How many calories are equivalent to 35 kilocalories?
35,000 calories
Kilo means 103 which is 1,000. Therefore, 35 kilocalories is equal to 35,000 calories.
Hydrogen usually has a +1 oxidation number. However, it can have a -1 oxidation number when it behaves as the nonmetal. This occurs only when it joins with ________, which are less electronegative than hydrogen.
Group 1 metals
Which change occurs when an Sn2+ ion is oxidized?
Oxidation means loss of electrons. When an Sn2+ ion is oxidized, it must lose electrons, and its electric charge must become more positive as a result.
The size of the atoms in one group _____ as you go down that group in the periodic table.
increases
Lewis Base is
electron pair donor
Bronsted Lowry acid is
a proton donor
Given H3O+ use what equation to solve for pH
-log(H3O+)
A solid is poor conductor of heat and electricity. and has low mp, this is classified as
molecular
the mp of an impure solid is generally ____ than that of a pure solid
lower
what factor effects the vapor pressure of a liquid
temp
a gas or vapor may be liquified only at temp
at or below the critical temp
density formula
d=m/V
m1v1=
m2v2
PV=
nRT
q=mxsx?
delta T
Molarity=
mol/L
molality
mol solute/kg solvent
