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When you add an acid to an alkali it changes to a neutral which colour change would this show with an indicator?
It depends on the indicator and there are quite a few. Methyl Red, Methyl orange and Phenolphthalein are 3 such acid-base indicators. If phenolphthalein is used as the indicator and added to the base it would immediately turn red/pink. As acid is titrated in, the red/pink will disappear and go colorless.
What else can I help you with?
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 color does universal indicator turn in deionized water?
since water is pretty neutral, the water does not change color but the universal indicator does. The universal indicator changes color as per the quantity of deionized water... But it changes to straw color or pale yellow in 50mL of deionized water.
Why is a indicator's reaction in acids and bases a chemical change?
When an indicator is added to an acid or base, it undergoes a chemical reaction with the hydrogen or hydroxide ions present in the solution. This reaction causes a change in the color of the indicator, indicating a shift in the pH of the solution. Since a new substance with different properties is formed during this reaction, it is considered a chemical change.
What is organic indicator?
Indicator organisms are organisms that are sensitive to changes in the environment. When populations of indicator species changes, it can signal a change in the environment that will eventually effect other species as well.
What is a indicator organisms?
Indicator organisms are organisms that are sensitive to changes in the environment. When populations of indicator species changes, it can signal a change in the environment that will eventually effect other species as well.
Universal indicator is a solution that changes what in an acidic or alkali solution?
Universal indicator doesn't change anything in an acidic or alkali solution. All universal indicator does is show how acidic or alkaline a solution is (red being acidic, green being neutral and blue being alkali)
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 color does red cabbage indicator change to in alkali?
either a green, dark green or blue colour for i have done the test myself
Why does cabbage indicator stay the same colour in water?
Cabbage indicator stays the same color in water because water has a neutral pH, which does not cause the indicator to change its color. The pigment in cabbage indicator changes color in response to changes in the pH level of its environment, but since water has a pH level close to 7 (neutral), there is no significant change in color.
Can sugar turn universal indicator red?
Yes, sugar is a neutral substance and will not change the color of universal indicator. Universal indicator changes color in response to changes in pH, indicating the acidity or alkalinity of a solution. Sugar does not alter the pH of a solution significantly.
What color does universal indicator turn in deionized water?
since water is pretty neutral, the water does not change color but the universal indicator does. The universal indicator changes color as per the quantity of deionized water... But it changes to straw color or pale yellow in 50mL of deionized water.
When you put an alkali and Universal Indicator in a test tube what colour does it go?
When an alkali is added to a test tube containing Universal Indicator, it typically turns the indicator solution a dark green or blue color. This is because Universal Indicator is a mixture of different pH indicators that show a range of colors from red (acidic) to green (neutral) to blue or purple (alkaline). The specific color change observed may vary depending on the concentration and type of alkali used.
Why is a indicator's reaction in acids and bases a chemical change?
When an indicator is added to an acid or base, it undergoes a chemical reaction with the hydrogen or hydroxide ions present in the solution. This reaction causes a change in the color of the indicator, indicating a shift in the pH of the solution. Since a new substance with different properties is formed during this reaction, it is considered a chemical change.
How could you titrate an acid and alkali without the use of an indicator?
If the acid or alkali forms an insoluble salt, you could titrate it that way. For instance, suppose you had a solution of sulfuric acid of unknown concentration. You could add calcium hydroxide until the precipitate stops forming and determine the strength of the acid by the amount of base added. If both the acid and alkali are soluble, a pH meter can be used to measure the change in pH of the solution. Drawing the change of pH against volume titrated will thus give the endpoint of the reaction.
What effect does and alkali have on an universal indicator?
When an alkali is added to universal indicator, the color of the indicator will typically change to blue or purple, indicating a high pH. Alkalis are substances that have a pH above 7 and tend to turn universal indicator towards the blue end of the spectrum.
How do you tell the pH of an acid or alkali?
You can determine the pH of an acid or alkali by using a pH indicator paper or probe. The pH scale ranges from 0 to 14, with lower numbers indicating acids (0-6), 7 being neutral, and higher numbers indicating alkalis (8-14). The color change on the indicator paper or the pH reading on the probe will indicate whether the substance is an acid or alkali.
What property of a substance can be determined using a pH indicator?
The acidity or alkalinity of the substance can be determined using a pH indicator. pH indicators change color based on the pH of a solution, helping to identify if a substance is acidic, neutral, or alkaline.
