Question

please give the answer.​

Answer 1

Answer:

I don't know this.s orey

Answer 2

Answer:

1.  Litmus is a water-soluble mixture of different dyes extracted from lichens. It is often absorbed onto filter paper to produce one of the oldest forms of pH indicator, used to test materials for acidity

2.    1. Small pH values are thus characteristic of acidic solutions; the smaller the pH, the more acidic the solution. By contrast, a basic solution is one in which the hydroxide-ion concentration is greater than 10–7 mol dm–3. ... Most of us are able to detect a sour, tart, acidic taste in a solution with a pH of between 4 and 5.

     2. baking soda, calcium hydroxide, magnesium hydroxide, milk of magnesia.

         3. The reaction of an acid with a base is called a neutralization reaction. The products of this reaction are a salt and water. ... For example, the reaction of hydrochloric acid, HCl, with sodium hydroxide, NaOH, solutions produces a solution of sodium chloride, NaCl, and some additional water molecules.

       4.It is called acid base reaction.