pH = 10 is a moderately strong ALKALI.
The pH scale is ;-
1 - 6 ; Strong Acid to weak acid
7 ; water (neutrality)
8 - 14 ; Weak alkali to strong alkali.
NB pH only ranges from '1' to '14'.
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When an alkali is added to an acid, the pH increases as the acid is neutralized by the base. This reaction forms water and a salt. The pH ultimately depends on the strength of the acid and the alkali.
The pH scale of the strongest alkali is typically around 14. Examples of strong alkalis include sodium hydroxide (NaOH) and potassium hydroxide (KOH), which can produce a highly alkaline solution with a pH of 14.
A weak alkali typically has a pH between 8 and 10. Examples of weak alkalis include baking soda (sodium bicarbonate) and ammonia.
Yes, the pH will change when an alkali is added to an acid. The addition of an alkali to an acid will result in the neutralization reaction, forming water and salt. This reaction will change the pH towards being more neutral.
Adding alkali to an acid will increase the pH of the solution. This is because the alkali is a base, which reacts with the acidic solution to neutralize it and increase the pH.