{"id":2647,"date":"2026-05-18T16:44:44","date_gmt":"2026-05-18T07:44:44","guid":{"rendered":"https:\/\/training.contentsda.kr\/?post_type=courses&p=2647"},"modified":"2026-05-18T07:44:45","modified_gmt":"2026-05-18T07:44:45","slug":"acid-and-base-reaction","status":"publish","type":"courses","link":"https:\/\/training.contentsda.kr\/ko\/courses\/acid-and-base-reaction\/","title":{"rendered":"Acid and Base Reaction"},"content":{"rendered":"

Objective:<\/strong> The objective of this experiment is to observe and distinguish the reactions of an acid (hydrochloric acid – HCl) and a base (sodium hydroxide – NaOH) with litmus papers.<\/p>\n

Materials:<\/strong><\/p>\n

    \n
  1. Hydrochloric acid (HCl)<\/li>\n
  2. Sodium hydroxide (NaOH)<\/li>\n
  3. Litmus papers (both red and blue)<\/li>\n
  4. Distilled water<\/li>\n
  5. Two small containers (e.g., beakers or cups)<\/li>\n<\/ol>\n

    Procedure:<\/strong><\/p>\n

      \n
    1. Setup (5 minutes):<\/strong>\n
        \n
      • Arrange the materials in a safe and well-ventilated workspace.<\/li>\n
      • Label one container for hydrochloric acid (HCl) and the other for sodium hydroxide (NaOH).<\/li>\n<\/ul>\n<\/li>\n
      • Testing Hydrochloric Acid (HCl) (10 minutes):<\/strong>\n
          \n
        • Dip a piece of blue litmus paper into the container labeled ‘HCl.’<\/li>\n
        • Observe and record any color changes in the litmus paper.<\/li>\n
        • Note if the litmus paper turns red, indicating acidity.<\/li>\n<\/ul>\n<\/li>\n
        • Testing Sodium Hydroxide (NaOH) (10 minutes):<\/strong>\n
            \n
          • Dip a piece of red litmus paper into the container labeled ‘NaOH.’<\/li>\n
          • Observe and record any color changes in the litmus paper.<\/li>\n
          • Note if the litmus paper turns blue, indicating alkalinity.<\/li>\n<\/ul>\n<\/li>\n
          • Additional Observations (5 minutes):<\/strong>\n
              \n
            • Optionally, dip the litmus papers into distilled water to observe the baseline color reactions.<\/li>\n<\/ul>\n<\/li>\n
            • Discussion (10 minutes):<\/strong>\n
                \n
              • Compare and discuss the observations with the class.<\/li>\n
              • Reinforce the concepts of acids turning blue litmus paper red and bases turning red litmus paper blue.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

                Conclusion:<\/strong> This straightforward experiment focuses on observing the color changes of litmus papers when they come into contact with hydrochloric acid (acidic) and sodium hydroxide (basic). It provides a simple and visual introduction to the reactions of acids and bases with litmus indicators.<\/p>","protected":false},"excerpt":{"rendered":"

                Objective: The objective of this experiment is to observe and distinguish the reactions of an acid (hydrochloric acid – HCl) and a base (sodium hydroxide – NaOH) with litmus papers. Materials: Hydrochloric acid (HCl) Sodium hydroxide (NaOH) Litmus papers (both red and blue) Distilled water Two small containers (e.g., beakers or cups) Procedure: Setup (5 […]<\/p>\n","protected":false},"author":1,"featured_media":3212,"template":"","course-category":[61,64,60],"course-tag":[],"class_list":["post-2647","courses","type-courses","status-publish","has-post-thumbnail","hentry","course-category-cardboard","course-category-free","course-category-webgl","pmpro-has-access"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/courses\/2647","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/courses"}],"about":[{"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/types\/courses"}],"author":[{"embeddable":true,"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":1,"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/courses\/2647\/revisions"}],"predecessor-version":[{"id":2649,"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/courses\/2647\/revisions\/2649"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/media\/3212"}],"wp:attachment":[{"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/media?parent=2647"}],"wp:term":[{"taxonomy":"course-category","embeddable":true,"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/course-category?post=2647"},{"taxonomy":"course-tag","embeddable":true,"href":"https:\/\/training.contentsda.kr\/ko\/wp-json\/wp\/v2\/course-tag?post=2647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}