Indicate whether the statement is true or False! Need help please. Its urgent! (Chemistry 20)?

1) When bromothymol blue changes from its acid form to its base form, the colour of the solution changes from blue to yellow.





2) When phenolphthalein changes from its acid form to its base form, the colour of the solution changes from colourless to pink.





3) A titrant for an acid-base titration analysis must be chosen to have an endpoint (change of colour) at very nearly the same pH as the equivalence point pH of the reaction solution.Indicate whether the statement is true or False! Need help please. Its urgent! (Chemistry 20)?
1. is false. BTB starts out blue when it is basic, then turns yellow in acid. I am 100% sure.





2. true.





3. false, but not sure.Indicate whether the statement is true or False! Need help please. Its urgent! (Chemistry 20)?
1) T


2) F


3) T
1 and 2 are true. I'm not sure about 3.

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