In acid: colorless
8.2
In base: purple
When magnesium is added to hydrochloric acid, a chemical reaction takes place, resulting in the formation of magnesium chloride and hydrogen gas. The color of the hydrochloric acid does not change significantly during this reaction.
Thymol blue changes color in the presence of acid or base. If hydrochloric acid is added, thymol blue would turn yellow due to the acidic environment.
Hydrochloric acid is an acidic solution, so when litmus powder is added to it, the litmus powder would most likely turn red. This is because litmus paper turns red in acidic solutions and blue in basic solutions.
red
red
Red, and an alikili goes blue.
green
Battery acid typically turns red in universal indicators, indicating that it is acidic.
Phenolphthalein turns pink/magenta in the presence of an alkali.
If you are asking about acid then the pH value will go from 7- to 7+.... If you are asking about the alkali the pH value will go from 7+ to 7-....
When acid is added to an alkali, the pH decreases or goes down. This is because the acid donates hydrogen ions (H+) to the alkali, neutralizing the alkaline properties and shifting the pH towards neutrality or acidity.
it goes bluey purpley when it is in water and red in acid and yellow - green in alkali