contestada

Match each substance with its correct definition.

a. neutral
b. base
c. acid
d. pH scale
e. phenolphthalein

1. a substance with a pH of 3
2. a substance with a pH of 10
3. a substance with a pH of 7
4. an indicator
5. a scale that represents the concentration of H 3 0+, 0-14

Respuesta :

JavierCollante
a-3 --> neutral is a substance with a pH of 7
b-2--> base is a substance with a pH of 10
c-1--> acid is a substance with a pH of 3
d-5--> pH scale is a scale that represents the concentration of H₃O⁺, 0-14
e-4--> phenolphthalein is an indicator

Explanation:

pH is defined as the measure of hydrogen ion in a solution. It ranges from 0 to 14. A solution having a pH range from 0 to 6.9 is known as acidic solution and the solution which have a pH range from 7.1 to 14 is known as basic solution.

The solution having a pH of 7 is known as neutral solution.

  • For a: neutral

A neutral substance always have a pH of 7.

  • For b: base

A basic substance has a pH range of 7.1 to 14. So the correct answer is it has a pH of 10.

  • For c: acid

An acidic substance has a pH range of 0 to 6.9. So, the correct answer is it has a pH of 3.

  • For d: pH scale

This scale lies in the pH range of 0 to 14 and it measures the concentration of hydrogen ion or hydronium ions in a solution.

  • For e: phenolphthalein

This substance is an indicator and it tells the acidity or basicity of a solution. Hence, the correct answer is an indicator.

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