Question

Phenolphthalein remains colorless in

a} HCl
b} Sodium hydroxide
c} sodium carbonate
d} ammonium hydroxide

Please fast as I have to complete my test...

Answer 1

Explanation:

b) sodium hydroxide

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Answer 2

Answer:

$\sf \huge \purple{ \clubs \: a) HCL}$

$\sf Additional \: Information : \\ \sf \: Phenolphthalein \:  is \: naturally  \\ \sf \: colorless \:  but \: turns \: pink \: in \: alkaline \: solutions \: . \\ \sf The \: compound  \: remains \: colorless \\ \sf  throughout \: the \: range \: of \: acidic \\ \sf pH \: levels \: but \: begins \: to \: turn \\ \sf pink \: at \: a \: pH \: level \: of \: 8.2 \: and \: continues \: to \: a \\ \sf \: bright \: magenta \: at \: pH \: 10 \: and \: above \: .$