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Why does milk change into yellow when Benedict's solution is added?
Wiki User
∙ 13y ago
Well, there's no error as such. It simply shows that there is a lower concentration of reducing sugars as opposed to brick red.
The colour change for Benedict's solution goes like this:
Blue -> Green -> Yellow -> Orange -> Red
Blue shows NO reducing sugars at all. The intermediate colours show varying concentrations of reducing sugars. Red is the highest concentration!
So, if it's coming up as yellow, there's no mistake- it's just that there's an intermediate amount of reducing sugars present in the solution.
It is possible to turn the solution brick red.
Repeat the experiment the exact same way as before- but this time, increase the concentration and amount of reducing sugars present. A brick-red precipitate should form!
Hope this helps. (:
peanutbutterjelly
Wiki User
∙ 13y agoMilk contains lactose which is considered to be a reducing sugar that Benedict's tests for.
Wiki User
∙ 9y agoBenedict's reagent is a test for reducing sugars. Glucose is able to donate electrons to the reagent, reducing the copper II ion to a copper I ion, changing the color from blue to red..
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Sodium carbonate is added with the purpose to increase the pH of the solution.
which of the following best describes a solution that contains a buffer?
sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
What happens when copper sulfate was added to water?
The solution will turn yellow
A solution that is resistant to change in pH?
Solutions that resist change in pH when added to a strong acid or base are known as buffer solutions.
Why scientist wants to test how much of an acid can be added to a solution before the ph of the solution change to below a certain point the starting ph of the solution is 6.0 and the scientist wants to know when the ph of the solution change to below 4.0?
4.0 (APEX)
Why Na2CO3 is added to solution before Benedicts test is performed?
Sodium carbonate is added with the purpose to increase the pH of the solution.
Why is sodium carbonate added to solution before Benedicts test is performed?
Sodium carbonate is added to increase the pH of the solution.
What is the effect of sugar solution on turmeric solution?
when sugar solution is added to turmeric solution , it turns yellow.
which of the following best describes a solution that contains a buffer?
sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
Why does adding 6 M HCl to the yellow solution of methyl red tend to cause the color change to red?
Methyl is an indicator, when HCl, which is an acid, is added, the solution will turn red.
What happens when copper sulfate was added to water?
The solution will turn yellow
Describe a solution that contains a buffer?
Acetic acid is added to the solution, but the pH of the solution does not change. Sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
What is observed when a solution of potassium iodide is added to silver nitrate solution?
A yellow precipitate of silver iodide (AgI).
Is this a chemical change or physical change silver nitrate solution is added to another solution producing a white solid?
it is a chemical change
What is the colour of barium chloride solution?
A solution of barium chloride is added to a solution of potassium chromate, a yellow precipitate forms.
What best describes a buffer?
A buffer is a substance in a solution that releases and captures hydrogen ions, keeping the pH the same.Sodium hydroxide, a base, is added to the solution, but the pH of the solution does not changeA buffer resists change in pH by accepting hydrogen ions when acids are added to the solution and donating hydrogen ions when bases are added.
How does concentration change after every spoon full of salt is added after the solution is saturated?
The concentration of the salt solution does NOT change- it is saturated.
