Solution: Federal regulations set an upper limit of 50 parts
Chapter , Problem 115IE(choose chapter or problem)
Federal regulations set an upper limit of 50 parts per million (ppm) of \(N H_{3}\) in the air in a work environment [that is, 50 molecules of \(N H_{3}\)(g) for every million molecules in the air]. Air from a manufacturing operation was drawn through a solution containing \(\text { 1. } 00 \times 10^{2} m L\) of 0.0105 M HCl. The \(N H_{3}\) reacts with HCl according to:
\(\mathrm{NH}_{3}(a q)+\mathrm{HCI}(a q) \rightarrow \mathrm{NH}_{4} \mathrm{CI}(a q)\)
After drawing air through the acid solution for 10.0 min at a rate of 10.0 L/min, the acid was titrated. The remaining acid needed 13.1 mL of 0.0588 M NaOH to reach the equivalence point. (a) How many grams of NH3 were drawn into the acid solution? (b) How many ppm of NH3 were in the air? (Air has a density of 1.20 g/L and an average molar mass of 29.0 g/mol under the conditions of the experiment.) (c) Is this manufacturer in compliance with regulations?
Equation transcription:
Text transcription:
N H_{3}
\text { 1. } 00 times 10^{2} m L
{NH}_{3}(a q)+{HCI}(a q) rightarrow {NH}_{4}{CI}(a q)
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