Question

There exist many chances of exposure to toxic chemicals for workers in many field of industries. Therefore, it is necessary to have a general method to measure the low levels of personal exposure that workers may receive to the diverse range of volatile gas used in the laboratory, manufacturing facilities or general storage. As a member of research group developing film type sensor, you are making chamber to measure the response of the developed sensor. You are asked to make a test chamber containing 100 ppm of Nitric acid vapor. Based on the information given below, please calculate the volume of nitric acid to be added. The sensor strip response was found to be sensitive to moisture content. Therefore, you have to calculate the moisture content inside of chamber.

Information
A. The volume of test changer = 1000 cm3
B. The nitric acid solution will be purchased from Sigma Aldrich. (Indicate the product number of the solution you have chosen)
C. The moisture content of atmosphere on a day of test corresponds to that of May 5 2015 and the temperature of 25 C.

* You can choose one nitric acid solution in this website (https://www.sigmaaldrich.com/catalog/substance/nitricacid6301769737211?lang=ko&region=KR)
* You can search the calibration chart for moisture content of atmosphere on May 2015. If hard you can just make assumption.

Based on the above information and assuming that all of the nitric acid will be evaporated inside of the chamber, calculate the volume of nitric acid to be added and the moisture content inside of the chamber.

Answer 1

There are two things before solving this question. First, it is a group project and is supposed to be solved by finding some experimental data which is not given in the question, like the moisture content on May 5 2015, which u need to find out, only after that you can go on to solve the question further. And the second thing there is also a need of a calibration chart to find out moisture content

Once you find out that, you should proceed as follows, try to understand what is volume of test changer is showing, there is no calibration chart is given in question, which should be given that would tell you the value of moisture content with function of volume changer.