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Thymol blue will be yellow at pH < 8

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14y ago

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What colour would a mixture of thymol blue and phenolphthalein go if you added hydrochloric acid?

HCl has a pH of 1 so thymol blue would turn red in this acidic condition. Phenolphthalein is colorless in an acid so what you would see would be red.


What colour would a mixture thymol blue and phenolphthalein go if sodium hydroxide was added?

The mixture would turn from yellow to blue as the pH increases with the addition of sodium hydroxide. Thymol blue changes color from yellow to blue in basic solutions, while phenolphthalein remains colorless in basic solutions.


What colour would hydrochloric acid go if litmus powder was added to it?

Hydrochloric acid is an acidic solution, so when litmus powder is added to it, the litmus powder would most likely turn red. This is because litmus paper turns red in acidic solutions and blue in basic solutions.


What would be the colour of the solution when copper oxide and dilute hydrochloric acids are mixed?

Blue


What would you observe after calcium is added to dilute hydrochloric acid?

no it was all wrong its fake


What colour would a mixture of thymol blue and phenolpthalein when adding sodium hydroxide?

The color of the mixture would depend on the specific concentrations and pH levels. Thymol blue transitions from yellow to blue with increasing pH, while phenolphthalein transitions from colorless to pink. It's likely that the mixture would show a combination of both yellow/blue and colorless/pink depending on the pH range reached with sodium hydroxide.


What colour would litmus paper turn into when dipped into hydrochloric acid?

Depends on the litmus paper. Red litmus will not turn but blue litmus will turn redish pink.


What would be Color of rose petals added to lemon juice?

it will be deep red colour if added to acidic solutions.


What color would you see if iodine is added to starch?

A deep blue colour


What happens if phenolphthalein solution is added in hydrochloric acid?

If phenolphthalein solution is added to hydrochloric acid, it will remain colorless since the pH of hydrochloric acid is too low for phenolphthalein to change color. Phenolphthalein typically turns pink in a basic solution but does not show a color change in acidic conditions.


What will happen if dilute hydrochloric acid was added to sandstone?

If dilute hydrochloric acid is added to sandstone, the acid may react with any calcite present in the sandstone, causing it to fizz and release carbon dioxide gas. However, the effect would be limited as sandstone is mainly composed of silica, which is not reactive to hydrochloric acid. Thus, the overall impact on the sandstone would be minimal.


What is the colour with universal indicator hydrochloric acid in stomach?

it would turn green with a hint of blue.