How do you find the vapor pressure of ammonia?
Vapor-pressure formula for ammonia: log10P = A – B / (T − C), where P is pressure in kPa, and T is temperature in kelvins; A = 6.67956, B = 1002.711, C = 25.215 for T = 190 K through 333 K.
What is ammonia vapor pressure?
The vapour pressure of ammonia is the pressure at which ammonia gas is in thermodynamic equilibrium with its condensed state. At higher pressures ammonia would condense. At this equilibrium condition the vapor pressure is the saturation pressure.
What is the vapor pressure of anhydrous ammonia?
Gaseous anhydrous ammonia is lighter than air with a specific gravity of . 597 at 32°F. At atmospheric pressure, NH3 boils at -28°F. As the temperature rises, the vapor pressure increases rapidly….NH3 Safety Tips.
| Temperature ºF | Pressure PSIG |
|---|---|
| 130 | 315 |
What is the pH of aqua ammonia?
Aqua ammonia is an excellent acid neutralizer. Its pH varies with concentration. Typical values are 11.7 at 1%, 12.2 at 5%, 12.4 at 10% and 13.5 at 30%.
What is a low vapor pressure?
Vapour pressure is a measure of the ability of a compound to bond with itself; compound molecules that bond well with each other will have a low vapour pressure (less tendency to escape to the vapour phase), while poorly bonding compounds will have a high vapour pressure.
At what pressure is ammonia liquid at room temperature?
NH3 boils at −33.34 °C (−28.012 °F) at a pressure of one atmosphere, so the liquid must be stored under pressure or at low temperature. Household ammonia or ammonium hydroxide is a solution of NH3 in water….Ammonia.
| Names | |
|---|---|
| Chemical formula | NH3 |
| Molar mass | 17.031 g/mol |
| Appearance | Colourless gas |
| Odor | strong pungent odour |
Is aqua ammonia flammable?
Ammonium hydroxide is very volatile and may release ammonia as a gas. Ammonia vapor, in concentrations of 16-25% volume by weight in air, is flammable, toxic by inhalation and corrosive.
What is a high vapor pressure?
Vapor pressure is a property of a liquid based on the strength of its intermolecular forces. A liquid with weak intermolecular forces evaporates more easily and has a high vapor pressure. A liquid with stronger intermolecular forces does not evaporate easily and thus has a lower vapor pressure.
What is the enthalpy of vaporization of ammonia?
At its boiling point of -33ºC, the enthalpy of vaporization of ammonia is 23.3 kJ/mol. AP Chemistry Ammonia, NH3, is used as a refrigerant. At its boiling point of -33 degress Celcius , the enthalpy of vaporization of ammonia is 23.3 kJ/mol.
What is the boiling point of anhydrous ammonia?
The boiling point of the chemical compound Ammonia is -28.01 Fahrenheit
What is the pH level of ammonium?
The pH of ammonia is about 11.5, which means it is basic in nature. This chemical has an ability to neutralize acids, and when dissolved in water it forms a positively charged ammonium (NH 4+) ion and a negatively charged hydroxide (OH-) ion.
What is the pressure of ammonia?
weight of liquid ammonia 5.15 pounds per gallon (water weight 8.33 pounds per gallon) boiling point liquid ammonia at atmospheric pressure- 28 oF (-33.3 oC) liquid ammonia expands to 850 times its liquid volume at atmospheric pressure.