When an Elodea leaf is added to a phenol red solution, the leaf will release oxygen through photosynthesis. The oxygen will cause the phenol red solution to change color, indicating the presence of oxygen production.
Phenol is a weak acid, so it can turn blue litmus paper red, indicating its acidic nature. However, phenol does not significantly affect red litmus paper, as it is not a strong enough acid to change its color. Overall, phenol primarily affects blue litmus paper by turning it red.
A benzene ring with one -OH.
Phenol red dropped into distilled water would give a red color. The color of phenol red varies with the pH: it is yellow below pH 6.8, red at pH 7.4, and pink or purple at pH above 8.2.
Phenol red is a red color at neutral pH. It changes color depending on the pH of the solution it is in.
The reaction between phenol red, calcium chloride, and baking soda is endothermic. The mixture will absorb heat from its surroundings as it undergoes the reaction, causing the temperature of the mixture to decrease.
Phenol red is a pH indicator that changes color in response to pH changes. It turns yellow in acidic conditions and red in basic conditions. When added to a solution containing baking soda (sodium bicarbonate), which is a basic substance, phenol red can turn red.
When an Elodea leaf is added to a phenol red solution, the leaf will release oxygen through photosynthesis. The oxygen will cause the phenol red solution to change color, indicating the presence of oxygen production.
Phenol red is red in its basic form.
It is a chemical change because it produces heat which is evidence that a chemical change has occured.
Phenol red changes yellow in acidic conditions due to a shift in its chemical structure, which occurs when the hydrogen ions in the solution cause the indicator to undergo a color change. This change is reversible when the solution becomes basic again.
When Calcium chloride reacts with phenol red and baking soda, it will generate carbon dioxide gas. This reaction causes the phenol red to change color – it will turn from red to yellow as the pH decreases due to the formation of carbonic acid.
Phenol is a weak acid, so it can turn blue litmus paper red, indicating its acidic nature. However, phenol does not significantly affect red litmus paper, as it is not a strong enough acid to change its color. Overall, phenol primarily affects blue litmus paper by turning it red.
If phenol red is added to sodium bicarbonate, the color of the solution will change based on the pH. In an acidic solution, phenol red will appear yellow, in a neutral solution it will be red, and in an alkaline solution (such as when sodium bicarbonate is added), it will turn a pink or magenta color.
Phenol red is made by condensation of Phenol and saccharine.pH below 6.8 = YellowpH above 8.2 = Red/FuschiaGradually turns from yellow to red/fuschia (pH between 6.8 and 8.2 = Pinkish)
Phenol red is yellow at an acid pH.
A solution of phenol red is a liquid.