this experiment is all about the synthesis of phthaleins, where phthalic anhydride is added to a 0.1 gram of phenol crystal and 2 drops of sulfuric acid. this was heated and and mixed. the product was added into two different test tubes   (a) Test tube containing diluted hydrochloric acid (b) Test tube containing diluted NaOH   for the result (a) colorless liquid was observed (b) a pink solution was observed   QUESTION: what does the result implies? explain your answer

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Organometallic compounds of d-block elements

The transition metals can form complexes since they have vacant d orbitals. They are also termed Coordination compounds. The organometallic compounds of the transition metals could be used as catalysts as well as reagents. For example, organocadmium, organozinc, organocopper, Grignard are used as the reagents for several reactions. Most of the complexes of organo transition metals are used as catalysts for many organic transformation reactions.