The preparation of hydrogen gas by reacting zinc and hydrochloric acid is done in a laboratory. Amount of zinc (in grams) required is to be determined and the minimum volume of solution (in (milliliters) needed to produce the desired amount of H 2 is to be determined. Concept Introduction: The ideal gas equation that shows the relationship between the pressure, volume, temperature and amount of the gas is followed as: P V = n R T Here, P is the pressure of the gas, V is the volume of the gas, T is the temperature of the gas, R is the universal or ideal gas constant and n is the amount of the gas in terms of moles of the gas. The conversion of pressure value from torr into atm is done by using the respective conversion factor: 760 torr = 1 atm 1 atm 760 torr . Conversion of the given temperature values from Celsius to Kelvin is done by using the relationship: K = 273.15 + ∘ C . Molarity is the concentration of a solution expressed as the number of moles of solute per liter of solution. Mathematically, this concept is expressed as: M = n V . The conversion of volume unit from liter to milliliter is done with the help of the conversion factor: 1 L = 1000 mL 1000 mL 1 L .
The preparation of hydrogen gas by reacting zinc and hydrochloric acid is done in a laboratory. Amount of zinc (in grams) required is to be determined and the minimum volume of solution (in (milliliters) needed to produce the desired amount of H 2 is to be determined. Concept Introduction: The ideal gas equation that shows the relationship between the pressure, volume, temperature and amount of the gas is followed as: P V = n R T Here, P is the pressure of the gas, V is the volume of the gas, T is the temperature of the gas, R is the universal or ideal gas constant and n is the amount of the gas in terms of moles of the gas. The conversion of pressure value from torr into atm is done by using the respective conversion factor: 760 torr = 1 atm 1 atm 760 torr . Conversion of the given temperature values from Celsius to Kelvin is done by using the relationship: K = 273.15 + ∘ C . Molarity is the concentration of a solution expressed as the number of moles of solute per liter of solution. Mathematically, this concept is expressed as: M = n V . The conversion of volume unit from liter to milliliter is done with the help of the conversion factor: 1 L = 1000 mL 1000 mL 1 L .
Solution Summary: The author explains that the preparation of hydrogen gas by reacting zinc and hydrochloric acid is done in a laboratory.
The preparation of hydrogen gas by reacting zinc and hydrochloric acid is done in a laboratory. Amount of zinc (in grams) required is to be determined and the minimum volume of solution (in (milliliters) needed to produce the desired amount of H2 is to be determined.
Concept Introduction:
The ideal gas equation that shows the relationship between the pressure, volume, temperature and amount of the gas is followed as:
PV= nRT
Here, P is the pressure of the gas, V is the volume of the gas, T is the temperature of the gas, R is the universal or ideal gas constant and n is the amount of the gas in terms of moles of the gas.
The conversion of pressure value from torr into atm is done by using the respective conversion factor:
760 torr=1 atm1 atm760 torr.
Conversion of the given temperature values from Celsius to Kelvin is done by using the relationship:
K=273.15+∘C.
Molarity is the concentration of a solution expressed as the number of moles of solute per liter of solution. Mathematically, this concept is expressed as:
M=nV.
The conversion of volume unit from liter to milliliter is done with the help of the conversion factor:
Identifying electron-donating and
For each of the substituted benzene molecules below, determine the inductive and resonance effects the substituent will have on the
benzene ring, as well as the overall electron-density of the ring compared to unsubstituted benzene.
Molecule
Inductive Effects
NH2
○ donating
NO2
Explanation
Check
withdrawing
no inductive effects
Resonance Effects
Overall Electron-Density
○ donating
O withdrawing
O no resonance effects
O donating
O withdrawing
O donating
withdrawing
O no inductive effects
Ono resonance effects
O electron-rich
electron-deficient
O similar to benzene
O electron-rich
O electron-deficient
O similar to benzene
olo
18
Ar
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