Chem final
When solutions of NH₄OH and K₂SO₄ are combined, what precipitate forms
...none
For the reaction represented by the eq Cl₂+2KBr→2KCl+Br₂, how many grams of potassium chloride can be produced from 500. grams each of chloride and potassium bromide?
106.5
For the reaction represented by the equation 2Na+Cl₂→2NaCl, how many grams of chlorine gas are required to react completely with 3.00 mol of sodium
106.5 g Cl₂
For the reaction represented by the equation AgNO₃+NaCl→NaNO₃+AgCl, how many moles of silver chloride are produced from 5.0 mol of silver nitrate
5.0 mol
For the reaction represented by the equation 2H₂+O₂→2H₂O, how many grams of water are produced from 4.00 mol of hydrogen?
72.08 g
A pressure of 720 mm Hg equals what in pascals and torr
720 torr 9.6 x 10⁴ pascals
In what kind of reaction do two or more substances combine to form a new compound?
A synthesis reaction
Particles in which states of matter have motion?
All states! Solid, liquid, and gas
As electrolyte concentration decreases, freezing-point depression approaches what value and what?
Approaches the value calculated by assuming complete ionization
Balance an equation
CH₄+O₂ → CO₂+H₂O CH₄+2O₂ → CO₂+2H₂O
A species that remains when an acid has lost a proton is a ____?
Conjugate base
Please name a few weak electrolytes
HC₂H₃O₂, H₂CO₃, CH₃COOH, HF
Please name a few binary acids
HF, HCl, HBr, HI, H₂S
In writing a chemical equation that produces hydrogen gas, what is the correct representation of hydrogen gas?
H₂
Substances whose water solutions conduct electricity easily do what in water?
Ionize water
According to the KMT, what makes particles move close to each other, like during condensation, or stay together?
Kinetic energy
Which of the following pairs of solutions produces a precipitate when combined and why?
NH₄Cl and AgNO₃
Which acid turns yellowish on standing?
Nitric acid
Electrolytes have a grater effect on freezing-point depression than nonelectrolytes because electrolytes do what?
Produce more moles of solute per mole of solvent
Which acid is manufactured in the largest amount?
Sulfuric acid
What assumption of the KMT is not true for non-ideal, or real gases
They don't obey the assumptions of KMT
Arrhenius theorized that a base is a chemical compound that increases the concentration of _______ when dissolved in water?
When dissolved in water, increasing the conc. of hydroxide ions
How do you know when a chemical equation is balanced?
When there are equal amounts of each kind of atom on either side of the equation
Volumes of gaseous reactants and products in a chemical reaction can be expressed as rations of small whole numbers as long as what is maintained?
a constant temperature and pressure
What makes an acid a chloric acid?
acids containing Cl⁻ anions
What is the small whole number that appears in front of a formula in a chemical equation?
coefficient
The equation AX→A+X is the general equation for a...
decomposition
In what kind of reaction does a single compound produce two or more simpler substances?
decomposition reaction
In what kind of reaction do the ions of two compounds exchange places in aqueous solution to form two new compounds?
double-displacement
The equation AX+BY→AY+BX is the general equation for a ?
double-displacement
According to Avogadro law, 1 L og H₂(g) and 1 L of O₂(g) at the same temperature and pressure have what in common?
equal numbers of molecules
Compare the compressibility of a gas, a liquid, and solids
g>l>s
Compare the kinetic energy and motion of particles of solids, liq, and gases. What happens during all 6 phase changes.
g>l>s I have no clue for the 6 phase changes....
Name some compounds that have components in a nonuniform arrangement.
heterogeneous mixtures, sand in water, ect.
The name of a binary acid begins with what prefix?
hydro
Ions are formed from solute molecules by the action of the solvent in a process called-
ionization
The value of R, the ideal gas constant, can be calculated from measured values of a gas's pressure, volume, temperature, and what?
molar amount
The members of a conjugate acid-base pair appear where in a chemical equation?
on opposite sides of an equation
Name a solvent for both polar and nonpolar solutes?
paint thinner, nail polish remover, ethanol
When solutions of 2 ionic compounds are combined and a solid forms, the process is called?
precipitation
What does the constant bombardment of gas molecules against the inside walls of a container produce?
pressure
Compare the strength of intermolecular interactions in solids, liq, and gases
s>l>g
Compare the strength of intermolecular interactions of particles of a gas, a liquid, and a solid
s>l>g
The eq. A+BX→AX+B is the general eq for a
single-displacement
In what kind of reaction does one element replace a similar element in a compound?
single-displacement reaction
During the dissolving process, which particles interact?
solute and solvent
Acids taste like what flavor?
sour!
The equ. A+X→AX is the general equation for a
synthesis reaction
Increasing temperature favors dissolution when the enthalpy of solution is
the enthalpy in positive
A heterogeneous mixture always contains how many substances and how are they distinguishable?
they have 2 or more different substances they can be visibly distinguished
In a solution at equilibrium, how are the rate of dissolution and crystallization related?
they occur at equal rates.
The conjugate base of a strong acid is a ?
weak base,
