Universal Indicator Color Chart

What is the Universal Indicator?

Universal Indicator is a pH indicator that is formed by mixing various pH indicators in a fixed proportion and it exhibits a smooth colour change when the pH of the solution changes from 0 to 14. The universal indicator also tells us about the strength of the solution apart from the nature of the solution....

Universal Indicator Color Chart

Universal indicator shows different colours at different concentrations of hydrogen ions or the pH of a solution. The universal indicator takes on a new colour when an acid or basic solution is put into it. By comparing the colour of the universal indicator to the colours on the pH colour chart, the pH value of the acid or base solution can be determined. We can tell whether a solution is a strong acid, weak acid, stronger base, or weak base by looking at the pH value color chart. The colours that the universal indicator produces at various pH levels are shown in the table added below....

pH for Acids

pH of acids or acidic solutions is less than 7. A solution with a pH of less than 7 is said to be acidic. For example, a pH of 4 indicates that the solution is acidic. It should be remembered that the lower the pH of a solution, the more acidic it is. A pH 1 solution, for example, is substantially more acidic than a pH 4 solution. To put it in another way, a pH 1 solution is a significantly stronger acid than a pH 4 solution. Strong acids are often defined as solutions with a pH of 0, 1, 2 or 3. Weak acid solutions have a pH of 4, 5, or 6. It is obvious that a substance’s acidity is proportional to its pH. The pH of strongly acidic chemicals is quite low. In fact, the stronger the acid, the lower the pH....

pH for Bases

pH of bases or basic solutions is greater than 7. When a solution has a pH greater than 7, it is referred to as the basic solution. A solution with a pH of 12 will, for example, be basic in nature or a base. It should be remembered that the higher the pH of a solution, the more basic it is. A solution with pH 14, for example, is significantly more basic than a solution with pH 11.  In other words, a pH 14 solution will be a much stronger base than an acid with a pH of 11. Strong bases are often defined as solutions with a pH of 11, 12, 13, or 14. Weak bases are defined as solutions with pH values of 8, 9, and 10. The pH of very basic compounds is extremely high. In fact, the stronger the base, the higher the pH....

pH for Neutral Substances

pH of neutral substances is exactly 7. Pure water is neither acidic nor basic; it is a neutral substance. As a result, pure water has a pH of 7. A sugar solution and a chloride solution are both neutral, with a pH of 7. As a result, any solution with a pH of 7 is considered neutral. Litmus paper, as well as other common indicators like methyl orange and phenolphthalein, will have no impact on a material with a pH of 7....

How is Universal Indicator Used?

On a strip of universal indicator paper, a drop of the solution to be tested is put. The colour of the indicator paper will change where the solution has been applied. The colour on the indicator paper is then compared to a colour on the standard pH colour chart. The pH value corresponding to this colour may be found on the pH colour chart. We can tell whether a solution is a strong acid, a weak acid, a strong base, or a weak base based on its pH value....

Types of Universal Indicators

On the basis of the applications universal indicators are categorized into two types,...

Universal Indicator Examples

Universal Indicators are of two types for example,...

Universal Indicator: FAQs

1. What is a Universal Indicator Class 10?...