Question

A solution is 2.0% by mass compound A and 3.5% by mass compound X. Separation via GC returns peak areas of 38234 for compound A and 23880 for compound X. Calculate the response factor. A. 1.50 B. 2.03 C. 1.17 D. 0.664 E. 0.491

Answer 1

The response factor for compounds A and X, using the given peak areas and concentrations, is calculated as 2.803, which does not match any of the provided options, indicating a potential error in the question or answer options.

Step-by-step explanation:

The response factor in gas chromatography (GC) is determined by comparing the peak areas of different compounds with their respective concentrations. The calculation of the response factor (RF) for compounds A and X using the provided peak areas and concentrations would follow the formula:

RF = (Peak Area of A / Concentration of A) / (Peak Area of X / Concentration of X)

Since a solution is 2.0% by mass compound A and 3.5% by mass compound X, we have:

RF = (38234 / 2.0) / (23880 / 3.5)

RF = (19117) / (6822.857)

RF = 2.803, which is not an exact match to any of the provided options A through E, suggesting a possible error in the question or the options provided.

Answer 2

The response factor for Compound A and Compound X based on their GC peak areas and mass percentage is calculated to be 1.60175, which is closest to the provided option B (2.03).

Step-by-step explanation:

The question asks for the calculation of the response factor for compounds A and X using Gas Chromatography (GC) peak areas and their percentage by mass in the solution. To calculate the response factor (RF), we use the formula RF = (Area of Compound A/Area of Compound X) × (Percent by mass of Compound X/Percent by mass of Compound A). Plugging in the values, we get RF = (38234/23880) × (3.5/2.0) which equals 1.60175. The response factor closest to this calculated value is 1.60, indicating that option B (2.03) is the correct answer since it is the closest value provided.