Universal indicator would turn dark blue or purple in caustic soda, indicating a high pH level.
Universal indicator is just that - an indicator. It is not intended as an accurate measurement system.
Water is NOT Universal Indicator. Water is often referred to as a Universal Solvent as a large number of substances are soluble in it. Universal Indicator is a chemical agent that can be used to test the pH of a liquid.
A neutral solution will turn universal indicator green.
The Universal Indicator would go green which is pH 7.
blue
Universal indicator would turn dark blue or purple in caustic soda, indicating a high pH level.
When bicarbonate of soda is added to universal indicator, it typically turns the solution a blue or purple color. This indicates a basic pH level.
Soda lime should register a pH above 7 when tested with a universal indicator. Soda lime is a mixture of chemicals including calcium hydroxide, which is a strong base. Universal indicators change color in the presence of different pH levels, with colors shifting towards blue for bases.
Baking soda is white in color and does not inherently have color-changing properties like universal indicators. If you mix baking soda with an acidic substance, it may react and change color due to the pH shift, but on its own, baking soda remains white.
The universal Indicator was invented in 1923 by Yamada
Universal Indicator Blue was created in 1992.
Universal Indicator Red was created in 1993.
Universal Indicator Green was created in 1995.
Universal Indicator Yellow was created in 1993.
Universal indicator is just that - an indicator. It is not intended as an accurate measurement system.
Alkalis turn universal indicator blue or purple.