How much copper is in the used copper chloride solution?

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Presentation transcript:

How much copper is in the used copper chloride solution? Nov 26 / 27 Act B24 Diluting the Problem LEARNING TARGET: I can conduct an dilution experiments in order to understand and determine its viability as a disposal method for solutions containing copper. CH Q How much copper is in the used copper chloride solution? VOCAB: Next slide

Parts per million (ppm) serial dilution Concentration Control Dilution Indicator Parts per million (ppm) serial dilution how much compared to total; strength of a substance no change for comparison reducing concentration; Making weaker chemical used to show change how many in one million units consistent steps reducing concentration

-Have collected as hazardous waste - -Dilute until safe ppm level - DISCUSSION What should we do with our used copper chloride solution from last class? -Dump down drain - -Have collected as hazardous waste - -Dilute until safe ppm level - -Collect / Reclaim metal - NO POSSIBLY YES YES What is meant when a concentration is expressed as ‘parts per million’ ? how many in one million show TED video and bottle

How can you make the solution in the 2nd cup more dilute? DISCUSSION 1 2 3 4 What is the concentration of the solution in the - 2nd cup to 1st cup? -- more, less or the same as - 2nd cup to 3rd cup? -- more, less or the same as How can you make the solution in the 2nd cup more dilute?

PROCEDURE AND DATA MATERIALS: PROCEDURE: Read on pg. B-61-62 and summarize DATA: WS 24.1 Determining Concentration WS 24.2 Treating Waste WS 24.3 Diluting Used Copper Chloride Solution

Expected Results should be cup 9

ANALYSIS - Discuss and answer Q 2-6 on pg. B- 63 ANS CHALLENGE Q How much copper is in the used copper chloride solution? A: about 100,000 ppm HOMEWORK 1. Catch up on journal; Finish AQs