What restriction applies to the use of the volume ratios in solving stoichiometry problems?
Volume ratios are valid only when the volumes of all gases being compared are measured under the same temperature and pressure
. Volume ratios also apply to only gases.
What specifies volume ratios in a balanced equation?
The coefficients
in a balanced chemical equation specify volume ratios for gaseous reactants and products.
How do mole ratios compare to volume ratios for gaseous reactants and products in a balanced chemical equation?
So, for gaseous reactants and products that are at the same temperature and pressure,
the mole ratio is equal to the volume ratio
.
What is the relationship between gas volume and number of moles at constant temperature and pressure?
At constant temperature and pressure
the volume of a gas is directly proportional to the number of moles of gas
. At constant temperature and volume the pressure of a gas is directly proportional to the number of moles of gas.
Which law describes the proportional relationship between the pressure and volume of a gas?
This relationship between pressure and volume is known as
Boyle’s law
, after its discoverer, and can be stated as follows: At constant temperature, the volume of a fixed amount of a gas is inversely proportional to its pressure.
What is the mole ratio?
Mole Ratio: is
a conversion factor between compounds in a chemical reaction
, that is derived from the coefficients of the compounds in a balanced equation. The mole ratio is therefore used to convert between quantities of compounds in a chemical reaction.
Can the mole ratio from a balanced chemical equation be interpreted as a ratio of volumes?
Can the mole ratio from a balanced chemical equation be interpreted as a ratio of masses?
No
—the mass ratio does not match the coefficients from the balanced chemical equation.
What is r in PV nRT?
PV = nRT. The factor “R” in the ideal gas law equation is known as the “
gas constant
”. R = PV. nT. The pressure times the volume of a gas divided by the number of moles and temperature of the gas is always equal to a constant number.
Is temperature directly proportional to volume?
If the temperature is in kelvin, volume and temperature are directly proportional
. … The relationship between the volume and temperature of a given amount of gas at constant pressure is known as Charles’s law in recognition of the French scientist and balloon flight pioneer Jacques Alexandre César Charles.
Why are moles and volume directly proportional?
Avogadro’s law states that “equal volumes of all gases, at the same temperature and pressure, have the same number of molecules.” … For a given mass of an ideal gas, the volume and amount (moles) of the gas are directly proportional
if the temperature and pressure are constant
.
Why is temperature and volume directly proportional?
So, that means that
volume
is directly proportional to temperature. Even then, since we increase the temperature inside a material, the molecules’ kinetic energy increases and they start to vibrate more and move around further from each other, therefore accounting for an increase in volume.
What is the relationship between pressure and volume?
It is summarized in the statement now known as Boyle’s law: The
volume of a given amount of gas held at constant temperature is inversely proportional to the pressure under
which it is measured.
Which gas law describes the relationship between the volume and temperature?
Charles’s law, or the law of volumes
, was found in 1787 by Jacques Charles. It states that, for a given mass of an ideal gas at constant pressure, the volume is directly proportional to its absolute temperature, assuming in a closed system.
Which law best describes the relationship between temperature and volume?
According to
Boyle’s law
, the pressure of a given quantity of gas is inversely proportional to its volume at a constant temperature.
