Given the temperature and pressure, what is the temperature and pressure in the standard state

Ideal gas satisfies to:

pv=nrt

t and p are certain, then only n affects v, and d is obvious.

Ideal gases ignore the size of the molecules and the gravitational force between the molecules, so A and C cannot be selected.

The size of the distance between molecules (in fact, the region controlled by each molecule (which is different from the volume of the molecule), i.e. it is free in this region and does not collide with other molecules).

pv=nkt, which is an equation that is also satisfied by an ideal gas, is equivalent to the above equation. Move the total number of numerators to the left, then there is.

PV=kt, where V is the volume controlled by each molecule. If t and p are certain, and v is certain, the distance between the molecules of the ideal gas is certain, so b is not chosen

I think that the magnitude of the intermolecular distance is a property of different types of gases, just as the density of different substances is its property, and one of the properties of an ideal gas is that the intermolecular distance is constant.

Choose D, the pressure, the temperature is set, and the distance between the molecules is also set! The ideal gas equation pv=nrt, proposed by Afergadro, p: pressure, v:

Volume, n: amount of matter, r: constant, t:

Thermodynamic temperature. Isn't that obvious?

Because the ideal gas is given at a given temperature and pressure, the main factor is the size of the diameter of the molecule.

t and p are certain, and the molecular spacing is also determined.

The formula for the relationship between pressure and temperature is PV=NTR, P represents pressure, T represents temperature, the ratio of the size of the pressure on the object to the area of force is called pressure, pressure is used to compare the effect of pressure, the greater the pressure, the more obvious the effect of pressure.

Temperature is a physical quantity that indicates the degree of heat and cold of an object, and microscopically speaking, it is the intensity of the thermal motion of the molecules of an object. Temperature can only be measured indirectly by certain characteristics of an object as a function of temperature, and the scale used to measure the temperature value of an object is called a temperature scale.

The standard states are: temperature, pressure. It is stipulated that temperature and pressure are used as the standard state for measuring the volume flow rate of gases.

1. China's "Standard Orifice Plate Calculation Method for Natural Gas Flow" stipulates that temperature and pressure are used as the standard state for measuring gas volume flow.

2. A pure gas state that exhibits ideal gas properties at any temperature t and standard pressure p = 100 kPa. Note: Before 1993, China stipulated the standard pressure p = , and then adopted the current p = 100kpa according to GB.

3. The standard temperature and pressure (STP) was once defined as 0°C in chemistry (and, but since 1982, IUPAC has redefined the "standard pressure" as 100 kPa.

There are three standard states of gas:

The standard states are: temperature, pressure.

It is stipulated that temperature and pressure are used as the standard state for measuring the volume flow rate of gases.

China stipulates that temperature and pressure are used as the standard state for measuring the volume flow rate of gases. In this state, the temperature is 0 C and the pressure is 101 kPa

This is a physical knowledge, in the standard state temperature and pressure it is calculated by calculation, then the temperature and pressure it is a calculation formula, you just calculate according to this formula.

The relationship between the pressure, volume and temperature of the gas: the law that a gas with a certain mass obeys when the three parameters change: PV t=c (constant). P is the gas pressure, V is the gas volume, and T is the gas temperature.

PV T is the equation of state of ideal gas, also known as the ideal gas law and the universal gas law, which is an equation of state that describes the relationship between pressure, volume, quantity of matter and temperature of an ideal gas in equilibrium.

Origin: It is based on empirical laws such as Boyle-Mariott's law, Charlie's law, and Guy-Lussac's law.

At room temperature and pressure, the volume of the actual gas molecules and the interaction between the molecules are negligible, and the state parameters can basically meet the ideal gas equation of state, so aerodynamics often simplifies the actual gas to a complete gas. In low-speed aerodynamics, air can be treated as a complete gas with a constant specific heat ratio.

Test Center: Molar Volume of Gases Special Topic: Special Topic on Chemical Terminology Analysis:

Standard condition: The abbreviation of the standard condition, referred to as STP, usually refers to the situation where the temperature is 0 (open) and the pressure is kPa (1 standard atmosphere, 760 mm Hg) The standard condition is referred to as STP, which usually refers to the temperature of 0 (open) and the pressure is kPa (1 standard atmosphere, 760 mm Hg), so choose d Comments: Memorizing the knowledge of the textbook is the key to the solution, which is a basic knowledge topic and is easier

Within atmospheric pressure, the pressure is related to the temperature.

Factors influencing atmospheric pressure.

Temperature: The higher the temperature, the stronger the movement of air molecules and the greater the pressure.

Density: The higher the density, the greater the air quality and the greater the pressure per unit volume.

Altitude: The higher the altitude, the thinner the air and the less atmospheric pressure.

The pressure of the liquid is related to the depth and density of the liquid, and not to the historical mass of the liquid.

Liquid pressure is caused by gravity and fluidity.

Factors influencing the pressure of the liquid: depth, density of the liquid (independent of the shape of the container, mass volume of the liquid).

The methods of increasing the pressure are: increasing the pressure under the condition that the force area remains the same or decreasing the force surface with the same pressure. The methods of reducing the pressure are: reducing the pressure under the condition that the force area remains the same or increasing the force area when the pressure is not the same.

The relationship between pressure and force and force area is:

Where: p stands for pressure; f represents the vertical force (pressure); s represents the stressed area;

Based on the above formula, the following formula can be derived:

This formula is used to calculate the pressure of a liquid, where p denotes the pressure; Indicates the density of the liquid; g and is numerically equal to the acceleration of gravity; h indicates the depth of the liquid.