Słownik angielskiego
You then have a solution of sulfuric acid in water.
This is clearly wrong as an acid solution should have a pH of less than 7.
They soak garlic bulbs in an acid solution for two or three days and then dry them.
For hydrochloric acid solutions, the minimum is around 0.4 M.
It will take 25 mL of acid solution to reach the endpoint in either case.
An acid solution, you see, it could damage the wool.
It is difficult to find a metal that will not electrolytically dissolve in acid solutions.
The color changes between red in acid solutions and blue in alkalis.
In extreme cases you may have to wash with a mild solution of muriatic acid.