What is the range of the pH scale?

What range are acids?

What range are bases?

1 to 14

1 - 6.9

7.1 - 14

Explanation:

The pH scale is a convenient scale for expressing the level of acidity or bascity of aqueous solutions. The pH is given as the negative logarithm to base 10 of the hydrogen ion  in the solution.

The scale ranges from 1 to 14 where 1 is the lower limit and 14 the highest limit. An acidic solution will have pH less than 7 in value; pH range is 1 - 6.9A neutral solution has a pH of 7From 7.1 to 14 is for basic solutions.

      Acidity increases                              Alkalinity increases

   1                                            7                                                 14

                                       neutral point

Molarity of HCl solution = 0.25 M

Explanation:

Given data:

Volume of NaOH= V₁ = 25.0 mL (25/1000 = 0.025 L)

Molarity of NaOH solution=M₁ = 0.185 M

Volume of HCl solution = V₂ = 0.0200 L

Molarity of HCl solution =  M₂= ?

Solution:

M₁V₁   =  M₂V₂

0.185 M ×0.025 L =  M₂ × 0.0200 L

M₂  = 0.185 M ×0.025 L / 0.0200 L

M₂  = 0.005M.L /0.0200 L

M₂  =  0.25 M