The formaldehyde content of a pesticide preparation was determined by weighing 0.2985 g of the liquid sample

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The formaldehyde content of a pesticide preparation was determined by weighing 0.2985 g of the liquid sample into a flask containing 50.0 mL of 0.0959 M NaOH and 50 mL of 3% H2O2. Upon heating, the following reaction took place:

After cooling, the excess base was titrated with 22.71 mL of 0.053700 M H2SO4. Calculate the percentage of HCHO (30.026 g/mol) in the sample.

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Fundamentals of Analytical Chemistry

ISBN: 978-0495558286

9th edition

Authors: Douglas A. Skoog, Donald M. West, F. James Holler, Stanley R. Crouch

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Question Posted: Apr 30, 2016 02:16 PM

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The formaldehyde content of a pesticide preparation was determined by weighing 0.2985 g of the liquid sample

Question:

OH + HCHO + H,O, HCO0 + 2H,0

Step by Step Answer:

amnt NaOH consumed 00959 mmol NaOH mL x 500 ...View the full answer

Fundamentals of Analytical Chemistry

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