Henderson-hasselbach vs. ICE chart

Thread starter member 392791
Start date Jul 20, 2012
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In summary, Henderson-Hasselbach and ICE chart are two methods used in chemistry to calculate the pH of a solution. Henderson-Hasselbach equation is used for weak acids and bases, while the ICE chart is used for strong acids and bases. Henderson-Hasselbach equation takes into account the acid dissociation constant and the concentrations of the acid and its conjugate base, while the ICE chart uses initial, change, and equilibrium values of the solution to determine the concentration of H+ ions and ultimately the pH. Both methods are important for understanding the properties of acids and bases and are commonly used in lab experiments and calculations.

Jul 20, 2012

member 392791

For acid-base equilibria problems, how do I know when I have to use an ICE chart, or when I can use the henderson-hasselbach equation?

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Jul 21, 2012

Bohrok

If it's a buffer solution, use the Henderson-Hasselbach equation; if you're given just the acid or it's conjugate, you use the ICE chart.

What is the Henderson-Hasselbach equation?

The Henderson-Hasselbach equation is a mathematical formula used to calculate the pH of a solution that contains a weak acid and its conjugate base. It takes into account the concentration of the acid, the concentration of its conjugate base, and the acid dissociation constant (Ka) of the weak acid.

What is the ICE chart and how is it related to the Henderson-Hasselbach equation?

The ICE (Initial, Change, Equilibrium) chart is a tool used to organize the information needed to solve problems involving equilibrium reactions. It is related to the Henderson-Hasselbach equation because the initial concentrations and the changes in concentration of the acid and its conjugate base can be used to calculate the equilibrium concentrations needed in the equation.

When is the Henderson-Hasselbach equation most commonly used?

The Henderson-Hasselbach equation is most commonly used in buffer solutions, which are solutions that resist changes in pH when small amounts of acid or base are added. It is also used in biological systems, such as blood, to maintain a stable pH.

What is the significance of the pH value in the Henderson-Hasselbach equation?

The pH value in the Henderson-Hasselbach equation represents the acidity or basicity of a solution. A lower pH indicates a more acidic solution, while a higher pH indicates a more basic solution. The pH value is important because it determines the strength of the weak acid and its conjugate base, as well as the overall pH of the solution.

How do you solve for the pH using the Henderson-Hasselbach equation?

To solve for the pH using the Henderson-Hasselbach equation, you must first determine the initial concentrations of the weak acid and its conjugate base, as well as the acid dissociation constant (Ka). Then, you can plug these values into the equation and solve for the pH. Alternatively, you can also use the ICE chart to determine the equilibrium concentrations needed in the equation.