Determine each of the following for a 0.050 M KOH solution:
b. pH

검증된 단계별 안내

Step 1: Recognize that KOH is a strong base, meaning it completely dissociates in water. The concentration of OH⁻ ions in the solution will be equal to the concentration of KOH, which is 0.050 M.

Step 2: Use the relationship between pOH and the hydroxide ion concentration [OH⁻]. The formula is:

pOH = - \log ({OH}_{-})

. Substitute [OH⁻] = 0.050 M into the formula.

Step 3: Calculate the pOH value using the logarithmic expression. This step involves taking the negative logarithm of 0.050.

Step 4: Use the relationship between pH and pOH to find the pH. The formula is:

pH = 14 - pOH

. Substitute the calculated pOH value into this formula.

Step 5: Simplify the expression to determine the pH of the solution. This will give you the final pH value for the 0.050 M KOH solution.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

도움이 되었나요?

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

pH Scale

The pH scale measures the acidity or basicity of a solution, ranging from 0 to 14. A pH of 7 is neutral, below 7 indicates acidity, and above 7 indicates basicity. The scale is logarithmic, meaning each whole number change represents a tenfold change in hydrogen ion concentration.

Strong Bases

Strong bases, like potassium hydroxide (KOH), completely dissociate in water to produce hydroxide ions (OH-). This complete dissociation means that the concentration of hydroxide ions in a solution directly corresponds to the concentration of the base, allowing for straightforward calculations of pH.

Calculating pH from pOH

To find the pH of a solution, one can first calculate the pOH, which is derived from the concentration of hydroxide ions. The relationship between pH and pOH is given by the equation pH + pOH = 14. Thus, knowing the pOH allows for easy conversion to pH, essential for determining the acidity or basicity of the solution.

Determine each of the following for a 0.050 M KOH solution:b. pH