Question

What is the strip shown above name it?

b. What it is used for?

c. How it is determined whether a substance is acidic, basic or neutral?

d. If table salt gives green colouration on addition of universal indicator and shows pH

value 7. Then determine whether it is acidic, basic or neutral.

e. If lemon shows pH less than 7 then it is acidic, basic or neutral?​

Answer 1

Answer:

a. It is an universal indicator

b. It shows PH value of a solution

c. when the PH value is less 7 it shows that the solution is Acidic in nature

when the PH value is more than 7 it shows that the solution is Basic in nature

and when the PH value of a solution is 7 it means that the solution is Neutral

d. Neutral

e. Acidic

Answer 2

Answer:

This is a pH indicator.

Explanation:

• The pH indicator is used to determine how acidic or basic a substance is.
• The pH scale determines how acidic or basic water is. The range is 0 to 14, with 7 representing neutrality.
• Acidity is indicated by pH values below 7, whereas baseness is shown by pH values above 7.
• In reality, pH is a measurement of the proportion of free hydrogen and hydroxyl ions in water.
• The table salt is neutral as it has a pH of 7
• The lemon is acidic as it has a pH which is less than 7.
• In chemistry, the pH scale is used to define the acidity or basicity of an aqueous solution.
• Historically, pH stood for "potential of hydrogen."

The pH values of acidic solutions are typically lower than those of basic or alkaline solutions.

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