KSP和QSP之间的差异

Key Difference – KspvsQsp

KSP是溶解度产品常数，QSP是溶解度产品商。这key differencebetween Ksp and Qsp is thatKSPindicates the solubility of a substance whereas Qsp indicates the current state of a solution.这solubility productis the product of concentrations of ionic species present in a solution when a substance is dissolved in a solvent such as water.

这solubility product is determined when the solution is saturated with that substance. Solubility product quotient is the product of concentrations of ionic species in a solution at any time; before the saturation or after the solution is saturated. It is sometimes known as the ionic product.

CONTENTS

1.Overview and Key Difference
2.What is Ksp
3.什么是QSP
4.Relationship Between Ksp and Qsp
5.Side by Side Comparison – Ksp vs Qsp in Tabular Form
6.概括

What is Ksp?

KSPis the solubility product constant of a particular substance. It indicates the solubility of a substance (how much of solid is dissolved in a solution). The solubility product constant is given for a solution that is saturated with a substance. Higher the Ksp, higher the solubility of that substance. The solubility product is given as the product of concentrations of ionic species in a solution.

Asaturated solutionappears with cloudiness that indicates the beginning of the formation of a precipitate. It is the insoluble form of solute. The liquid portion of that system has the soluble solutes. The Ksp of that solution represents the equilibrium between these soluble and insoluble forms.

影响溶解度乘积常数的因素是温度，存在常见离子，pH or acidity等等。当温度升高时，固体沉淀物的溶解度也会增加。然后，离子物种浓度的乘积增加，导致溶解度产物常数高值。公共离子效应描述了共同离子的存在。当存在共同离子时，KSP会减少。一个共同的离子是指该溶液中已经存在的一种离子物种。例如，对于含有BASO4（硫酸钡）沉淀的平衡系统以及Ba⁺²ions and SO₄^2-ions, the addition of either Ba⁺²或者₄^2-离子会影响平衡。

巴斯_4(s)↔ Ba⁺²_(aq)+ SO₄^2-_(aq)

当从外部源添加这些离子之一时，上述平衡向左侧移动（形成了更不溶性的物质形式，减少了溶液中存在的离子量），从而降低了该物质的溶解度。

什么是QSP?

Qsp is the solubility product quotient of a solution. It describes the current state of a solution. This means Qsp is given for an unsaturated (before saturation), saturated or a supersaturated solution. The Qsp is also called the ion product because it is the product of concentrations of ionic species at any moment (not at a specific moment such as saturation). Therefore, Ksp (the solubility product constant) is a special form of Qsp.

KSP和QSP之间有什么关系？

• If the Qsp value is less than the Ksp for a substance in a solution, more solids can be dissolved in that solution.
• When the Qsp and Ksp have equal values, then the solution has become saturated.
• If the Qsp is higher than the value of Ksp, a precipitate is formed.

What is the Difference Between Ksp and Qsp?

KSPvs Qsp
KSPis the solubility product constant of a particular substance.	Qsp is the solubility product quotient of a solution.
Nature
KSPis an equilibrium value.	Qsp is not an equilibrium value.
状态的解决方案
KSPis the product of concentrations of ionic species in a saturated solution.	Qsp is the product of concentrations of ionic species in an unsaturated, saturated or a supersaturated solution.

概括–KSPvsQsp

KSPand Qsp are very related terms in chemistry. Ksp is defined as a saturated solution which has equilibrium between ionic species and a solid precipitate (the moment at which the formation of a precipitate has begun). Qsp is given for any moment (not specified); before the saturation or after the saturation. The difference between Ksp and Qsp is that Ksp is the solubility product constant whereas Qsp is the solubility product quotient.