Chemistry 155 Introduction to Instrumental Analytical Chemistry
Chemistry 155 Introduction to Instrumental Analytical Chemistry
Chemistry 155 Introduction to Instrumental Analytical Chemistry
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Chem <strong>155</strong> Unit 1 Page 38 of 3131.10.3 Plan the analysis!1. If you dissolve the packet in water, dilute it <strong>to</strong>100.0 mL and filter it, what will the approximatesucrose concentration be (ppth)?0.8 gsyrup0.7 gsucrose 1100 mLg syrup water1000 mgsucroseg sucrose1 mLwater1 gwater= 5.6 ppthIs this within the dynamic range?Would it be better <strong>to</strong> use 10, 25 or 50 mL ofwater?2. You need <strong>to</strong> prepare a s<strong>to</strong>ck solution of sucrose<strong>to</strong> make the calibration standards. Whatconcentration should this s<strong>to</strong>ck solution be?1, 10, 100 or 1000 ppth?3. How much sucrose would be required <strong>to</strong> make:1, 10, 100 or 1000 mL of this solution?1.0mL100 mgsucrose =1 mLsoution100 mgsucrose =0.100 gsucrose10 mL =>1.00 gsucrose100mL =>10.0 gsucrosePage 38 of 313