Above a pressure of 200 atmospheres and at a temperature of 100 degrees Celsius, water is in gas phase.
2 answers:
Answer: The given statement is false.
Explanation:
When water is boiled at a pressure of 1 atm and temperature is 100 degree celsius then both liquid and vapor state of water exists in equilibrium.
But as the temperature reaches at more than 100 degree celsius then liquid state of water changes into vapor state.
But when above pressure of 200 atmospheres and at a temperature of 100 degrees Celsius water is heated then it will exist in liquid phase and not in vapor phase.
Therefore, we can conclude that the statement, above a pressure of 200 atmospheres and at a temperature of 100 degrees Celsius, water is in gas phase, is false.
You might be interested in
Answer:
Molecular formula: S4K8O16 empirical formula: SK2O4
Explanation:
First we find the moles of each by first finding grams (using the percent) and then using stoichiometry to convert into moles:
Sulfur: 696 *.18 = 125.28grams S*
Potassium: 696 *.4487 = 312.2952 *= 7.99117 mole K
Oxygen: 696 * .367 = 255.432 * = 15.9654 mole O
Then we divide each value by the atom with the smallest number of moles to find the mole ratio:
3.907/3.907= 1
7.99117 mole K/ 3.907= 2.043
15.9654 mole O/ 3.907= 4.08
The empirical formula is SK2O4
To find the molecular formula, we divide the mass given (696) by the mass of the empirical formula (174.22) to get 4. We then divide each atom by 4.
Molecular formula: S4K8O16
Answer:
19.488 kJ
Explanation:
The overall reaction mechanism shows the reaction between LiCl and H₂O
-------- (1)
-------- (2)
--------- (3)
---------- (4)
The overall reaction =
The heat effects of the above reactions from 1-4 respectively are in the order ; 11311.34 kJ, -857.49 kJ, -873.61 kJ and 439.288kJ respectively
The overall enthalpy change is:
at constant pressure;
Thus; Q = 1311.3 (kJ) 857.49 (kJ) -873.61 (kJ) + 439.288 (kJ)
Q = 19.488 kJ
Thus, the heat effect = 19.488 kJ after the addition of 1 mol of LiCl⋅3H2O(s)