Question

To correct data gathered from this process, the ASTM recommends using the Dickinson extrapolation method over the Regnault–Pfaundler method. This process is used to remove organic material in a “wet” method that uses perchloric and nitric acids, or a “dry” method performed in a “muffle” instrument. This process is done within a controlled jacket in model 6200 (-5[1])and 6400 isoperibol instruments. (15[1])To calibrate this (15[1])process, (15[1])the Parr Instrument Company sells one gram pellets of (*) benzoic acid. (10[3])This process leads to rapid changes in sample mass in evolved gas analysis methods such as TGA. The composition of a sample is determined by (10[1])undergoing (10[1])this process, followed by gas chromatography, in CHNS/O analysis. (10[1])This process is done to completion in a crucible in ashing. For 10 points, (10[2])name this exothermic process (10[1])whose internal (10[2])energy change is measured in bomb calorimetry. (10[1])■END■

ANSWER: combustion [accept combustion analysis; accept burning; prompt on bomb calorimetry or ashing or elemental analysis until read by asking “what type of reaction is involved?”; prompt on oxidation; prompt on heating by asking “what type of reaction produces the heat?”; reject “fire” or “flames”]
<DN/KP, Chemistry>
= Average correct buzz position

Buzzes

Summary

TournamentEditionExact Match?TUHConv. %Power %Neg %Average Buzz
2024 Chicago Open07/28/2024Y15100%20%7%99.73