Question: The black indicator of Eriochrome T (N.E.T.) has the following colors depending on the pH: 
 Options:  <1> H2In¯rojo, HIn2- blue, In3- orange and when complexed with metal it is red. <2> H2In¯azul, HIn2- red, In3- orange and when complexed with metal it is red. <3> H2In¯rojo, HIn2- blue, In3- red wine and when complexed with metal it is orange. <4> H2In-red, HIn2- orange, In3- blue and when complexed with metal it is orange. <5> H2In¯azul, HIn2- orange, In3- red and when complexed with metal is orange.
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