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When a small amount of white powder was shaken with distilled water in a test tube powder sank bottom when drops of universal indicator were added it turn red?
The white powder is likely to be a base as it sank to the bottom when mixed with distilled water. The red color observed after adding universal indicator indicates that the solution became acidic. This suggests that the white powder was an insoluble base that released a basic solution when mixed with water, which turned acidic upon adding the indicator.
What happened to the distilled water in the beaker add 20 drops of bromthymol blue?
When 20 drops of bromthymol blue are added to distilled water in a beaker, the solution will change color depending on the pH level of the water. Bromthymol blue is a pH indicator that turns yellow in acidic conditions (pH below 6) and blue in basic conditions (pH above 7), while it remains green in neutral conditions (around pH 7). Since distilled water is typically neutral, the solution will likely appear green. However, if there are any impurities or if the water's pH is altered, the indicator may show a different color.
What cation is present with a few drops of KSCN added to water?
If a few drops of KSCN (potassium thiocyanate) are added to water, K+ cations would be present as KSCN dissociates into K+ and SCN- (thiocyanate) ions in water.
When antifreeze is added to water the freezing point of the water is what?
It drops to about 12 degrees Fahrenheit.
What is universal indicator?
It is a substance used to determine the strengths of acids and alkali.It changes color according to the pH of the material its in. It is so useful because the color also tells you how strong the substance is. As an example, if you were to put a few drops of the indicator in water it would go green. A few drops of it in cleaning products and it would go a deep purple.A universal indicator can give various colors to a huge variety of pH ranges.
Why are only a few drops of indicator used in a titration?
Only a few drops of indicator are used in a titration to avoid affecting the results by introducing excessive impurities into the solution. The indicator is added to help visually determine the endpoint of the titration, where the reaction is completed. Adding more indicator than necessary can lead to errors in the measurements.
Why is it that 2 or 3 drops of the indicator is added during titration of acid and base?
Adding a few drops of indicator helps to visually identify the endpoint of the titration, which is the point at which the reaction is complete. The indicator changes color at a specific pH, indicating that the acid and base have been completely neutralized. This helps the titrator know when to stop adding the titrant.
How much phenolphthalein indicator should be used?
Typically, 1-2 drops of phenolphthalein indicator are sufficient to use in an acid-base titration experiment. It is important not to use too much indicator, as it can affect the accuracy of the titration results.
When a small amount of white powder was shaken with distilled water in a test tube powder sank bottom when drops of universal indicator were added it turn red?
The white powder is likely to be a base as it sank to the bottom when mixed with distilled water. The red color observed after adding universal indicator indicates that the solution became acidic. This suggests that the white powder was an insoluble base that released a basic solution when mixed with water, which turned acidic upon adding the indicator.
Why are indicators used in drops in titration?
Indicators are used in drops during titration to detect the endpoint of the reaction, which is when the reaction has reached completion. The indicator changes color when the pH of the solution changes, indicating that the correct stoichiometric amount of titrant has been added to the solution being titrated.
If a few drops of universal indicator is added to water changes red what pH value is it?
Its Ph value is less than 7, so it is acidic. The exact colour change needs to be compared visually with a standard universal indicator chart to determine the precise Ph value associated with that particular shade of red.
What is the most likely outcome if drops of salt water are added on top of stomata?
The most likely outcome of adding drops of salt water on top of stomata is that the salt water will disrupt the normal function of the stomata, potentially leading to the stomata closing and affecting the plant's ability to exchange gases and regulate water loss.
What happened to the distilled water in the beaker add 20 drops of bromthymol blue?
When 20 drops of bromthymol blue are added to distilled water in a beaker, the solution will change color depending on the pH level of the water. Bromthymol blue is a pH indicator that turns yellow in acidic conditions (pH below 6) and blue in basic conditions (pH above 7), while it remains green in neutral conditions (around pH 7). Since distilled water is typically neutral, the solution will likely appear green. However, if there are any impurities or if the water's pH is altered, the indicator may show a different color.
Are sour gum drops more likely to be an acid or base?
Sour gumdrops are more likely to be acidic because the sour taste often comes from citric acid or another acid added to the candy to give it its tangy flavor.
Why do cough drops have a little 'B' on them?
It is likely a symbol for the brand name. For example, Halls cough drops have an "H" on them.
How can you find out how acidic somethig is?
use the pH scale by adding 1 or 2 drops of universal indicator in an acid or an alkali
How is the pH of a solution is measured using universal indicator?
The pH of a solution is measured using universal indicator by adding a few drops of the indicator to the solution and observing the color change. The color of the solution corresponds to the pH level on the universal indicator color scale, which ranges from red (acidic) to purple (neutral) to blue (basic).
