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The negative logarithm of the hydrogen ions activity is a measure of pH in the solution.
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∙ 7y ago
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What is the chemical used to identify changes in pH?
They are called pH indicators.
Dyes with pH sensitive colors are used as?
Indicators :)
What can indicators identify?
Indicators are used frequently for testing pH; but many other indicators exist for other compounds or ions.
What compound changes color when used to determine the pH of a substance?
There are a variety of indicators used to determine change in pH. Different indicators change during certain ranges of pH. For example, phenolphthalein turns from clear to pink in a basic solution (approximately 7.8 to 9). There are universal indicators that cover the whole pH scale.
What are PH indicators used for?
it tests how acid or alkaline a substance is, and can have many uses, from science, to gardening. It measures on the pH scale, which goes from 1-14 and comes in different forms, from electronic testers with digital readouts, to a strip of paper which changes color when dipped in a liquid
How indicators works?
pH indicators change their color according to the pH of a solution.
Why can't a single indicator be used to tell the pH of a solution?
their are indicators that can.
What do indicators tell us?
Indicators are used to tell a person whether or not a chemical is present or what pH a substance may be. Usually an indicator is a strip that is dipped into the substance and will change color based on the presence of a substance or pH.
Why you need pH?
pH is used as a measurement of the concentration of hydrogen ions in a solution. pH is the negative logarithm of the hydrogen ion concentration.
What is the purpose of the bromcresol purple in the fermentation tube?
These are both used as pH indicators.
How can a pH indicator be useful?
pH indicator works as the range by alkalinity wether it's basic or acidic. Indicator properties are often found naturally in plants (eg. litmus). pH indicators are often just refined versions of various natural plant chemicals or synthesized versions of them.
How do indicators distinguish acids and bases?
By the pH, or more specific, the amount of positive hydrogen atoms. The higher the number pH, the lower the acidity (i.e. 14 pH is the most basic base, 1 being the highest).
