HP Buffer Calculator

The official version of HP Buffer Calculator is a simple and practical buffer pH calculation tool. HP Buffer The latest version of Calculator can help users perform buffer configuration calculations and is suitable for various chemical experiment industries. Via HP Buffer Calculator software users can better configure buffers, improve experimental efficiency while saving buffers.

HP Buffer Calculator software introduction

The buffering effect of the buffer solution composed of the weak acid HA and its salt NaA on the acid is due to the presence of a sufficient amount of base A- in the solution. When a certain amount of strong acid is added to this solution, the H+ ions are essentially consumed by the A- ions:

So the pH value of the solution is almost unchanged; when a certain amount of strong alkali is added, the weak acid HA present in the solution consumes OH- ions and hinders the change of pH.

When a small amount of strong acid or alkali is added to the buffer solution, the pH value of the solution will not change much. However, if acid or alkali is added in large amounts, the buffer solution will lose its buffering effect. This shows that its buffering capacity has a certain limit.

The buffering capacity of a buffer solution is related to the concentration of the components that make up the buffer solution. 0.1mol·L-1HAc and 0.1mol· The buffer solution composed of L-1NaAc has a greater buffering capacity than the buffer solution of 0.01mol·L-1HAc and 0.01mol·L-1NaAc. This can be confirmed by calculation. However, the concentration of the buffer solution components cannot be too large, otherwise, the interaction between ions cannot be ignored.

When the ratio of the two components that make up the buffer solution is not 1:1, the buffering effect is reduced and the buffering capacity is reduced. When c (salt)/c (acid) is 1:1, the △pH is the smallest and the buffering capacity is large. It has a great buffering effect on both acid and alkali. The pH value of the buffer solution can be calculated by the following formula:

At this time, the buffering capacity is large. The further the ratio of the buffering components is from 1:1, the smaller the buffering capacity, and may even fail to play a buffering role. For any buffer system, there is an effective buffer range, which is roughly one pH unit on either side of pKa%u3C6 (or pKb%u3C6).

Weak acid and its salt (weak acid and its conjugate base) system pH=pKa%u3C6±1

Weak base and its salt (weak base and its conjugate acid) system pOH=pKb%u3C6±1

For example, the pKa%u3C6 of HAc is 4.76, so HAc and NaAc are suitable for preparing buffer solutions with a pH of 3.76 to 5.76, and have a greater buffering effect in this range. The buffering capacity is maximum when preparing a buffer solution with pH=4.76, at this time (c(HAc)/c(NaAc)=1.

HP Buffer Calculator installation steps

​ 1. Download the HP Buffer Calculator official version installation package from Huajun Software Park

​​ 2. After downloading, unzip the compressed package into a folder named after this software

3. Open the folder and double-click the "exe" program

4.HP Buffer Calculator is green software and can be used without installation.

HP Buffer Calculator update log

​​ 1.Fix several bugs;

​​ 2. Optimize detailed issues;