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Safety Measures for Acid and Alkali Use

Learn about the dangers of strong acids and alkalis, how to treat accidents, precautions to avoid mishaps, and proper dilution procedures for safety. Discover tips for handling household cleansers and concentrated solutions effectively. Stay safe while working with corrosive substances!

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Safety Measures for Acid and Alkali Use

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  1. 10.7Safety matters related to the use of acids and alkalis

  2. - Strong acids and alkalis are highly corrosive. Corrode skin, clothes, metals and marbles p.50

  3. Nitric acid Sulphuric acid Hydrochloric acid - Acids commonly used in the laboratory:

  4. -If acids/alkalis are splashed onto skin or eyes, it can cause serious burns. What are the treatmentsfor these accidents? How to avoid these accidents? - Vapour of strong acids/alkalis may hurt the eyes and the respiratory system.

  5. - The following household cleansers containstrong acids/alkalis: p.50 This toilet cleanser contains hydrochloric acid. These drain cleansers contain sodium hydroxide.

  6. Science in life Caustic (哥士的) Solids of sodium hydroxide (哥士的) can be made into solution for removing oily stains. What safety precautions should we take?

  7. - Commercial products containing acids or alkalis are often soldin form of concentrated solutions. - These concentrated solutions contain low proportion of water and high proportion of acids or alkalis. => Diluting before use What are the advantages of selling products in form of concentrated solutions?

  8. water concentrated acid/alkali p.53 -For safety, we should follow proper procedures in diluting concentrated solutions. Should not add water to concentrated acids/alkalis Release a large amount of heat and concentrated acids/alkalis willspurt out.

  9. concentrated acid/alkali water -Proper procedures in diluting concentrated acids/alkalis: wear gloves, goggles and protective coats carry out the dilution inside a fume cupboard or ventilated area slowly add concentrated acid/alkali to a large amount of water continuously stir the solution

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