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INDICATOR meaning: 1. a fact, measurement, or condition that shows what something is like or how it is changing: 2. a…. Learn more.
chemical indicator, any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.
INDICATE definition: 1. to show, point, or make clear in another way: 2. to show other road users that you intend to…. Learn more.
indicator (somewhat formal) a sign that shows you what something is like or how a situation is changing: the economic indicators Healthy skin is an indicator of overall well-being. signal an event, an action, or a fact that shows that something exists, is happening, or may happen in the future: This latest decision is a signal of a major change in policy.
indicator meaning, definition, what is indicator: something that can be regarded as a sign...: Learn more.
Indicator. An indicator is a chemical compound that changes its colour in presence of an acid or base. Indicators are generally derived from plant pigments and are mildly acidic or basic in nature. Types of indicators. Natural indicators. For example red cabbage. Synthetic indicators. For example phenolphthalein. Olfactory indicators. For ...
Indicators are organic weak acids or bases with complicated structures. For simplicity, we represent a general indicator by the formula HIn, and its ionization in a solution by the equilibrium, HIn ⇌ H + + In −. and define the equilibrium constant as Kai, Kai = [H +][In −] [HIn] which can be rearranged to give.
