{"id":52808,"date":"2025-09-21T05:46:35","date_gmt":"2025-09-20T20:46:35","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=52808"},"modified":"2025-09-21T05:46:35","modified_gmt":"2025-09-20T20:46:35","slug":"how-to-dilute-hydrochloric-acid-sulfuric-acid-ammonia-and-copper-chloride-master-the-basics-of-dilution-for-safe-lab-prep","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=52808&lang=en","title":{"rendered":"How to Dilute Hydrochloric Acid, Sulfuric Acid, Ammonia, and Copper Chloride: Master the Basics of Dilution for Safe Lab Prep!"},"content":{"rendered":"
\n

I’m Ken Kuwako, a science trainer. For me, every day is an experiment.<\/strong><\/p>\n<\/div>\n

\"\"<\/p>\n

\u3010Read this article in English<\/a>\u3011<\/p>\n

When handling chemicals in the science lab, a solid understanding of dilution is essential for conducting experiments “safely, accurately, and efficiently.” In this guide, I’ve put together key dilution methods, safety protocols, and practical concentration levels for common experiments, specifically for fellow teachers. This is based on research I originally did for my own preparations. Knowing you’ve “done your homework” is a great confidence booster, and thorough preparation is the backbone of a quality lesson. This article will help you get a firm grasp on how to think about diluting the chemicals you use most often.<\/p>\n

For example, science handbooks like Hamajima Shoten’s Science Handbook (page 243)<\/a> provide summaries of dilution methods. From these, we know that a 5% concentration of sodium hydroxide works for the electrolysis of water, and a 5% concentration of hydrochloric acid is fine for its own electrolysis. This page, however, offers a more detailed, practical guide on solution preparation for teachers in the field. For the specific calculations, like converting from mass percent concentration to molarity, please see my other article here:<\/p>\n

\u3010\u3082\u3046\u8ff7\u308f\u306a\u3044\uff01\u3011\u8cea\u91cf\u30d1\u30fc\u30bb\u30f3\u30c8\u6fc3\u5ea6\u3068\u30e2\u30eb\u6fc3\u5ea6\u3092\u81ea\u7531\u81ea\u5728\u306b\u5909\u63db\u3059\u308b\u5316\u5b66\u306e\u30ec\u30b7\u30d4\uff08\u898f\u5b9a\u5ea6N\u30fbppm\uff09<\/a><\/p><\/blockquote>\n