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Sagot :
Answer:
6.37.
Explanation:
What is given?
[H (+)] = 4.25 x 10⁻⁷ mol/dm³
Step-by-step solution:
First, let's see the formula to calculate the pH based on the hydrogen ion concentration (H (+)):
[tex]pH=-log\lbrack H^+].[/tex]*Logarithm must be in base 10!
Our given concentration of hydrogen ion is 4.25 x 10⁻⁷ mol/dm³. Remember that the units of concentration must be in M (mol/L) but in this case, 1 dm³ equals 1 L, so based on this, we have that:
[tex]4.25\cdot10^{-7}\frac{mol}{dm^3}=4.25\cdot10^{-7}\frac{mol}{L}.[/tex]So, we can replace this value in the formula of pH:
[tex]pH=-log\lbrack4.25\cdot10^{-7}]\approx6.37.[/tex]The pH of milk would be 6.37 which means that is slightly acid (weak acid).
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