Practical General Chemistry Lecture 3 PDF
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Uploaded by DynamicTropicalRainforest
Imam Ja'afar Al-Sadiq University
Marwan AL-Abbasi
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Summary
This document details a chemistry lecture on preparing solutions. The lecture covers glassware and tools, chemical procedures, and standard results. The target audience is first-year university students.
Full Transcript
Practical General Chemistry Lecture 3 Presented by Assistant Lecturer Marwan AL-Abbasi Medical laboratory Techniques Department Imam Ja′afar Al-Sadiq University Kirkuk First year students Lecture3: Preparation Solution from...
Practical General Chemistry Lecture 3 Presented by Assistant Lecturer Marwan AL-Abbasi Medical laboratory Techniques Department Imam Ja′afar Al-Sadiq University Kirkuk First year students Lecture3: Preparation Solution from Solid Glassware and Tools النمام زجاج الساعة Watch glass Stirrer كوب Beaker ملعقة Spatula Funnel قمع volumetric Flask توازن زجاجة غسيل قارورة حجمية Washing bottle Balance Chemicals Procedure Sodium carbonate Na2CO3 to prepare 1N in 100 ml of D.W. 1. Weight the solid substance in a watch glass. 2. Transfer to a beaker and add a small amount of solvent to the beaker and stirred the solution until the solid substance is dissolved. 3. Transfer the solution to the volumetric flask. 4. Put a funnel into the slim neck of the volumetric flask. 5. Complete the additional of solvent to required volume (add solvent until the liquid level reaches the calibration mark). 6. Capped the volumetric flask and inverted until the contents are thoroughly mixed and completely dissolved. 𝑵 × 𝑬𝒒. 𝒘𝒕 × 𝑽 𝒎𝒍 𝒘𝒕 = 𝟏𝟎𝟎𝟎 Standard Result: 5.3 g of Na2CO3 dissolve in 100 ml D.W. Figure: Explained how to make a solution
