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Question: Answered & Verified by Expert
40% (w/v) of NaCl solution (specific gravity = 1.12) is equivalent to
ChemistrySome Basic Concepts of ChemistryNEET
Options:
  • A 3.57×105 ppm
  • B 3.57×106 ppm
  • C 1×106 ppm
  • D 4×105 ppm
Solution:
1876 Upvotes Verified Answer
The correct answer is: 3.57×105 ppm
Volume of solution = 100 mL
Mass of solution = Volume × density
Mass of solution =100×1.12=112 g
Concentration in ppm =WsoluteWsolution×106
ppm in NaCl solution =40112×106
=3.57×105 ppm.

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