Difference Between Combined Gas Law and Ideal Gas Law

Key Difference – Combined Gas Law vsIdealGas Law

在研究不同的气体时，体积，压力，气体温度和存在的气体之间的关系非常重要。这些关系由理想的天然气定律和合并的天然气定律给出。在解释这些法律时，“理想的气体”经常使用。理想的气体不存在现实，而是一种假设的气态化合物。它没有intermolecular forces在气体分子之间。但是，当提供适当的条件（温度和压力）时，某些气体可以作为理想气体行为。为理想气体创建气体定律。当将这些气体定律用于实际气体时，会考虑一些校正。合并的天然气定律是三个天然气法的组合；Boyle’s Law, Charles’ Law, andGay-Lussac’s Law。这key differencebetween combined gas law and ideal gas law is, thecombined gas law is a collection of three gas laws whereas ideal gas law is an individual gas law.

内容

1.Overview and Key Difference
2.什么是合并的气体法
3.What is Ideal Gas Law
4.Relationship Between Combined Gas Law and Ideal Gas Law
5.Side by Side Comparison – Combined Gas Law vs Ideal Gas Law in Tabular Form
6。概括

什么是合并的天然气法？

Combined gas law is formed from the combination of three gas laws; Boyle’s Law, Charles’ Law, and Gay-Lussac’s Law. The combined gas laws indicate that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant.

pv/t = k

In which P is pressure, V is volume, T is temperature and k is a constant. When the combined gas law is used along with Avogadro’s law, it results in the ideal gas law. The combined gas law has no owner or discoverer. The above relationship can be given as below as well.

P1V1/T1 = P2V2/T2

这给出了两个状态下理想气体的体积，温度和压力之间的关系。因此，该方程可用于在初始状态或最终状态下解释和预测这些参数。

Boyle’s Law

At constant temperature, the volume of an ideal gas is inversely proportional to the pressure of that gas. This means the product of initial pressure (P1) and initial volume (V1) is equal to the product of final pressure (P2) and final volume (V2) of the same gas.

P1V1 = P2V2

查尔斯的法律

在恒定压力下，理想气体的体积与该气体温度成正比。该法律可以如下。

V1/T1 = V2/T2

Gay-Lussac’s Law

At constant volume, the pressure of an ideal gas is directly proportional to the temperature of the same gas. This can be given as below,

P1/T1 = P2/T2

What is Ideal Gas Law?

这理想的气体law is a fundamental law in chemistry, and it indicates that the product of pressure (P) and volume (V) of an ideal gas is directly proportional to the product of temperature (T) and a number of particles of gas (n).

PV = KNT

Here, k is a proportionality constant. It is known as Boltzmann’s constant. The value of this constant is found to be 1.38 x 10^-23j/k。但是，理想气体简单地表示如下。

PV = nRT

Where n is the number of moles of gas present, and R is the universal gas constant given by 8.314 Jmol^-1K^-1。This equation can be used only for ideal gases. If it needs to be used for real gases, some corrections are made because real gases have many exceptions from ideal gases.

这个新方程称为van der Waals equation。It is given as below.

（p + a {n/v}²) ({V/n} – b) = RT

在此方程式中，“ A”是一个常数，取决于气体的类型和B的类型也是一个常数，它给出了每摩尔的体积（由气体分子占据）。

What is the Relationship Between Combined Gas Law and Ideal Gas Law?

• When the combined gas law is used along with Avogadro’s law, it results in the ideal gas law.

合并气体法与理想气体法之间有什么区别？

Combined Gas Law vs Ideal Gas Law
这combined gas law is formed from the combination of three gas laws; Boyle’s Law, Charles’ Law, and Gay-Lussac’s Law.	理想的天然气定律是化学方面的基本定律；它表明理想气体的压力（P）和体积（V）的乘积与温度（T）的乘积和许多气体颗粒（N）成正比。
形成
这combined gas law is formed by the combination of Boyle’s Law, Charles’ Law, and Gay-Lussac’s Law.	这理想的气体law is an individual law.
方程
合并的气体定律由PV/T = K给出	这理想的气体law is given by PV = nRT

概括–Combined Gas Law vsIdealGas Law

Gas laws are used to understand and predict the behaviour and properties of a gas. The difference between combined gas law and the ideal gas law is, the combined gas law is a collection of three gas laws whereas ideal gas law is an individual gas law. The combined gas law is formed from Boyle’s Law, Charles’ Law, and Gay-Lussac’s Law.

Reference:

1.Helmenstine, Anne Marie. “Understand the Combined Gas Law in Chemistry.” ThoughtCo.Available here
2.Helmenstine, Anne Marie. “What Is the Ideal Gas Law? Review Your Chemistry Concepts.” ThoughtCo.Available here
3.“理想气体定律与合并的天然气定律有何不同？|苏格拉底。”org。Available here

Image Courtesy:

1.’Temperature Pressure Law’By Egmason – Own work,(CC BY-SA 3.0)viaCommons Wikimedia
2.’37147128632’by Travis Wise（CC由2.0）via Flickr