Question

Questions
1 What does the pH scale measure?
2 What is the pH of a neutral solution?
3 A liquid has a pH of 1. What type of liquid is it?
4 What range of pH do strong alkalis have?
5 What colour does Universal Indicator go in a liquid with a
pH of 9?
6 Which colours does Universal Indicator go in acids?​

Answer 1

1. pH scale measures acidicity/basicity

2. 7 is the pH of neutral solution

3. solution is acidic

4. strong alkalis have a pH of 12 or greater than 12

5. medium green (not light nor dark)

6. red

Answer 2

Answer:

1. pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.

2. A substance that is neither acidic nor basic is neutral. The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral.

3. It is an acidic liquid

4. 12

Alkalis. Strong alkalis have a pH of 12 or greater.

5. Universal indicator is a brown coloured solution containing a mixture of indicators, that can be added to any substance to determine its pH. It changes colour in different pH environments. At pH range of 8−11, the colour is blue.

6.Universal indicator has many different colour changes, from red for strongly acidic solutions to dark purple for strongly alkaline solutions.

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