Advertisements
Advertisements
Question
Name the indicator which can give us an idea of how strong or weak an acid or base is.
Solution
A universal indicator shows different colours at different concentrations of hydrogen ions in a solution and tells us how strong or weak an acid or a base is.
APPEARS IN
RELATED QUESTIONS
What colour will universal indicator show if you add it to the following substances?
(a) potassium hydroxide, pH = 12
(b) soda water, pH = 5
(c) sulphuric acid, pH = 2
Fill in the following blank with suitable words:
The more alkaline a solution, the............... the pH.
Explain how pH change in the lake water can endanger the lives of aquatic animals (like fish). What can be done to lessen the danger to the lives of aquatic animals in the lake?
A sample of rain water turned universal indicator paper yellow. What would you expect it pH to be? Is it a strong or a weak acid?
The pH values of five solutions A, B, C, D and E are given below:
| A | 1 |
| B | 5 |
| C | 7 |
| D | 11 |
| E | 13 |
The pH values of five solutions A, B, C, D and E are given below:
| A | 1 |
| B | 5 |
| C | 7 |
| D | 11 |
| E | 13 |
Solution A turns universal indicator blue to purple whereas solution B turns universal indicator orange to red.
What sort of reaction takes place when solution A reacts with solution B?
How could the person change his eating habits to lessen chances of suffering from tooth decay?
Turmeric and litmus are _________ acid-base indicators.
A milkman adds a very small amount of baking soda to fresh milk. Why does this milk take a long time to set as curd?
