Question

The correct method of finding pH of solution is to :
(a) heat the solution in the test tube and expose the pH paper to the vapours
formed.
(b) pour solution from the test tube on pH paper
(c) drop the pH paper into the solution
(d) add a drop of solution on the pH paper using a dropper.

Answer 1

Answer:

The correct method of finding pH of solution is to  add a drop of solution on the pH paper using a dropper.

Explanation:

pH of solution:

• pH stands for potential hydrogen

• The amount of acidity or basicity in an aqueous solution is determined by its pH.
• The concentration of hydrogen ions in the solution can be used to calculate and determine the pH of an aqueous solution.
• An aqueous solution's pH is calculated using the pH scale, which commonly refers to water and ranges from 0 to 14. 
• The pH scale classifies 7 as neutral.
• An acidic solution has a pH lower than 7.
• Basic solution having a pH greater than 7.

The formula:

                      pH = - log[$H^{+}$]

Methods of finding pH value:

• Place a new pH paper strip on a white tile.
• Using a clean dropper, place the sample on the pH paper.
• Observe how the pH paper's colour changes.
• Compare the colors on the normal pH chart to the colors found on the pH paper.

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Answer 2

Answer:

The correct answer to this question is add a drop of solution on the pH paper using a dropper.

Explanation:

• pH is the value which can be used to find the acidity or basicity of the solution.

• The concentration of hydrogen ions in the solution can be used to calculate and determine the pH of an aqueous solution.

• An aqueous solution's pH is calculated using the pH scale, which commonly refers to water and ranges from 0 to 14.

• From one to six it indicates acidity. Where the one is highly acidic and its acidity reduces to 6.

• 7 is neutral, which is not either acidic nor basic.

• When the pH lies from 8 to 14, this nature is basic. 14 is highly basic and 8 is least basic.
  
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