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How a mixture of methyl orange litmus and phenolphthalein could be used as a type of universal indicator?
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∙ 10y ago
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∙ 10y ago
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An indicator does which one of the following in the presence of acids and bases?
Indicators can be used to determine if a substance is a acid or a base because of the reaction that occurs between the substance and the indicator. This creates a color change in the indicator (depending on which indicator you use). If it is a universal indicator, the substance may change from deep red to violet. If it is a litmus indicator, it will only turn either red or blue.
What is the name of the solution to test for acids or alkalis?
There are various ways to test for an acid and an alkali. For acidic solution: Litmus paper/ litmus solution --> red Phenolphthalein --> colorless Methyl orange --> pink Universal Indicator (changes color according to the strength of acid) --> red to yellow. For alkaline solutions: Litmus paper/ litmus solution --> blue Phenolphthalein --> pink Methyl orange --> yellow Universal Indicator --> blue green to purple
How can hydrochloric acid turn red in color?
Universal Indicator turns concentrated HCl red because Universal Indicator turns strong acids reds.
What does acid base indicator mean?
Red cabbage or beetroot juice will do the job.
How could you test for an acid or alkali?
Litmus; universal indicator; reaction tests; spectroscopy.
A well known indicator?
Phenolphthalein Litmus Red Litmus Blue Universal Indicator -> Most Common Methyl Orange :)
An indicator does which one of the following in the presence of acids and bases?
Indicators can be used to determine if a substance is a acid or a base because of the reaction that occurs between the substance and the indicator. This creates a color change in the indicator (depending on which indicator you use). If it is a universal indicator, the substance may change from deep red to violet. If it is a litmus indicator, it will only turn either red or blue.
What is the name of the solution to test for acids or alkalis?
There are various ways to test for an acid and an alkali. For acidic solution: Litmus paper/ litmus solution --> red Phenolphthalein --> colorless Methyl orange --> pink Universal Indicator (changes color according to the strength of acid) --> red to yellow. For alkaline solutions: Litmus paper/ litmus solution --> blue Phenolphthalein --> pink Methyl orange --> yellow Universal Indicator --> blue green to purple
Is universal indicator paper the same as blue litmus paper?
No totally different, universal indicator is a mixture of chemical which shows the precise p.H of a substance, blue litmus paper reveals whether the substance is acidic or alkaline.
How can hydrochloric acid turn red in color?
Universal Indicator turns concentrated HCl red because Universal Indicator turns strong acids reds.
How does the color change when a strong acid is added an alkali to neutralise?
The color does not change unless an indicator such as litmus or phenolphthalein is being used. If litmus the color change is blue to red If phenolphthalein the change is red to colorless
What does acid base indicator mean?
Red cabbage or beetroot juice will do the job.
How can you test for an alkaline or acid?
With a universal indicator or with litmus paper.
How are acids and bases tested?
universal indicator or litmus paper
How do you test the acidity of objects?
Litmus paper or universal indicator are the best ways.
How can you tell if food contains acids?
Use universal indicator or litmus paper
What is a indicator of acid?
All acidic solutions are colourless in phenolphthalein, pink in methyl orange solution and turns blue litmus paper into red.
