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It will remain red
When red litmus is added to an alkali, its colour changes to blue. This is because an alkali is a base and has the property of turning red litmus paper or red litmus solution to blue.
It goes brown.
Thymol blue will be yellow at pH < 8
There is a vigorous and exothermic reaction. The hydrochloric acid and zinc react to produce zinc chloride and hydrogen gas. Large amounts of heat are also released.
It will remain red
It turns greenLOL
When red litmus is added to an alkali, its colour changes to blue. This is because an alkali is a base and has the property of turning red litmus paper or red litmus solution to blue.
It goes brown.
the same color red
Blue. This answer assumes that you are referring to litmus paper.
I think it is supposed to be PURPLE. Because of the following:It turns red when placed in acidic solutionIt turns blue when placed in alkaline solutionAnd purple when placed in neutral.
it changes colour from a white powder to a blue powder
It turns from its original blue colour to red.
Thymol blue will be yellow at pH < 8
It appears to be red if a lot of hydrogen ions is removed by a higher concentration of base added
litmus paper nutral