Question IF RR 2024 - Chemistry Teacher Competition - Neutralization Reaction of Laboratory Waste

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Professor Fabricio Valverde

Published on Premiered Dec 11, 2024
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Question from the Federal Institute of Roraima competition for a position as a chemistry teacher on the neutralization reaction of laboratory waste. In order to neutralize the solution contained in a tank that is the result of mixing two industrial wastes I and II, two samples of these wastes AI and AII were collected, respectively, with the following characteristics: AI – volume = 150 mL and pH = 3 AII – volume = 50 mL and pH = 12 After mixing these two samples, it was necessary to adjust the pH of the resulting solution. The alternative that presents an action to make it neutral is the addition of: Given: Molar mass (g/mol) –H: 1,N: 14,O: 16, Na : 23,Cl : 35.5 a) 22 mg of HNO3 b) 14 mg of NaOH c) 12 mg of NaCl d) 28 mg of HNO3 e) 11 mg of NaOH Some suggested videos: • UnB-DF Question - Separation of mixture... • Question - FFO Diamantina - MG - En... • FUVEST 2024 Question - Step-by-step -... • UERJ Question - Step-by-Step - Concen... • FUVEST Question - Step-by-Step - Isom... Contacts: / fabricio-de-carvalho-32a6a7131 / fa_valverde79 00:00 Introduction 00:31 Question resolution 24:50 Final considerations

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