Which substance is not in its standard state?
Which substance is not in its standard state?
The standard state of a chemical substance is its phase (solid, liquid, gas) at 25.0 °C and 1 atm pressure. Among the given substances, HCl is not in its standard state. This is because, at the aforementioned conditions, HCl is liquid (i.e. aqueous).
Is h2 in its standard state?
Re: Standard States Gas is the standard state for the noble gases, hydrogen, helium, nitrogen, oxygen, fluorine, and chlorine. Solid is the standard state for all other elements.
Is Co in its standard state?
Thus, the standard state for carbon is solid, for water is liquid and for hydrogen is gas. Why? Because at 1.00 atm. and 25 °C, these substances are in the physical state specified.
What is meant by the standard state of a substance?
At any particular temperature, we define the standard state of any liquid or solid substance to be the most stable form of that substance at a pressure of one bar. For example, for water at −10 C, the standard state is ice at a pressure of one bar; at +10 C, it is liquid water at a pressure of one bar.
What is standard state of a substance in thermodynamics?
“The standard state of a substance occurring in a condensed phase is the actual state of the substance occurring at the given temperature under a pressure of one atmosphere.”
What conditions are called standard in thermodynamics?
STP stands for Standard Temperature and Pressure. It is defined to be 273 K (0 degrees Celsius) and 1 atm pressure (or 105 Pa). The definition of standard state conditions specifies 1 atm of pressure, that liquids and gases be pure, and that solutions be at 1 M concentration.
What is the specific gas constant is it same for all gases?
The gas constant value is equivalent to Boltzmann constant but expressed as the pressure-volume product instead of energy per increment of temperature per particle….Gas Constant In Different Units.
| Gas Constant Value | Units |
|---|---|
| 0. | L.atm.K-1.mol-1 |