Question

Проблемка с десятичной частью логарифма-забыла их напрочь! Знаю, что PH -это - lg {H+}. Дано: PH раствора равно 6,5. Какова мольная концентрация ионов водорода в этом растворе, то есть чему равна {H+} ?

Answer 1

Следовательно, гидроксильный показатель данного раствора pOH = 9. Если водородный показатель в растворе pH< 7, то мы имеем дело с кислотной средой. + Так как pH = – lg [H ] = 5, то концентрация ионов водорода в этом растворе равна [H+] = 10–5 моль/л.

Answer 2

Solving for the Molar Concentration of Hydrogen Ions in a Solution

To find the molar concentration of hydrogen ions in a solution, we can use the pH value of the solution. The pH is defined as the negative logarithm (base 10) of the concentration of hydrogen ions in the solution. The formula for pH is:

pH = -log[H+]

Where [H+] represents the concentration of hydrogen ions in moles per liter (M).

Given that the pH of the solution is 6.5, we can use this information to calculate the molar concentration of hydrogen ions.

Calculating the Molar Concentration of Hydrogen Ions

Using the formula for pH, we can rearrange the equation to solve for [H+]:

[H+] = 10^(-pH)

Substituting the given pH value of 6.5 into the equation:

[H+] = 10^(-6.5)

Let's calculate the value of [H+] using the given pH value.

Calculation

[H+] = 10^(-6.5) [H+] ≈ 3.16 x 10^(-7) M

So, the molar concentration of hydrogen ions in the solution is approximately 3.16 x 10^(-7) M.

Therefore, the molar concentration of hydrogen ions in the given solution is approximately 3.16 x 10^(-7) M.