A medium-grade brine is used, which is slightly acidic with a pH of around 4 – is this a weak acid?
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A medium-grade brine is used, which is slightly acidic with a pH of around 4 – is this a weak acid?
As long as it is an aqueous solution, a pH of 4 definitely indicates acidity, weak acidity
A pH value of 4 does not necessarily mean it is a weak acid; strong acids can also have a pH of 4, it simply indicates that the concentration of hydrogen ions is low. It is also necessary to analyze what acid is actually present in the medium (Qualitative analysis)
The acidity of this brine at the point of precipitation is not high; it’s not considered highly acidic. The pH resulting from the hydrolysis of salts with strong acids and weak bases is generally higher than that in this case. However, when it comes to “brine”, what is added during the brine treatment process? Iron trichloride? Or pH adjustment?
What was said on the second floor is correct – it is weakly acidic, but it isn’t necessarily a weak acid