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Question:

to 5 ml of water in a test tube, add one microspatulaful of aluminum powderadd one milliliter of?

concentrated HClwhat will happen if you will perform this procedures? what will happen to the temperature before and after reaction? is this exothermic or endothermic? has it something to do with enthalpy?

Answer:

a salt of aluminium choloride will formHeat will be evolved, since it is an ACID-METAL reaction, so it's exothermicThus the tempafter the rxnwill bet greater(hotter) than beforeAll reactions, have to do with enthalpy, lol ;-)

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