ฉันใช้กูเกิ้ลทรานเสลดในการแปลConfirmation That the Lightstick Reaction is Exothermic
Some students erroneously presume that the lightstick reaction
does not give off heat. After all, if the lightstick reaction is
exothermic, why does not the lightstick get noticeably wumer
when the reaction is proceeding? The most likely explanation is
that the reaction causes only a small increase in temperature
and that the plastic housing acts as an insulator making the
small temperature change ‘undetectable to the touch. One can
show that there is an increase in temperature by cutting open
an activated lightstick and transferring 5-10 mL of the
luminous liquid contents to a test tube. After placing a
thermistor or other temperature measuring device intQ_ihe
glowing mixture, 0.1-0.5 g of sodium salicylate is added and
the contents are mixed. For larger audiences, it is suggested that
the thermistor be connected to a viewable digital display. The
temperature rises substantially (Figure 3) confirming the
exothermic nature of the reaction.”
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