Monday, March 4, 2013

thermochemistry experiment - lab report

Objective: Does the temperature of the weewee increased or decreased as the dry ice is added both 30 seconds, until 300 seconds? What reaction lead it be? (Endothermic or Exothermic reply)

Hypothesis: The temperature of the water will decreased as the dry ice is added all(prenominal) 30 seconds. Also, the reaction will be endothermic reaction.

Reaction: CO2+H2O → H2CO3
Technique: I will nominate a bowl that stomach fit 1000cc water. Then survey the initial temperature of the water using Pasco sensing element first. Then, I will use insulated gloves to put one dry ice every 30 seconds and see the temperature change. I will do this constantly until 300 seconds then I stop.
Variable: Control - Water, 1000cc
free-lance- teetotal ice amount, 1-10
Dependent- Temperature

Background Information: change ice is frozen carbon dioxide, Co2, which can make tons of fascinating experiment. The temperature is around -109.3°F or -78.5°C. Which is good for tutelage things cold, for example to keep box of ice cream cold. Dry ice is sublime faster in water or else than air. It was because the water transfers heat much more quickly to the surrounding. each in water or air, dry ice can change its form, from solid to gas.

Why you have chosen this situation technique to saloon the temperature?

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I chose the particular technique to measure the temperature of the water with dry ice because this is the only way it works. Also, it is easier for me to do work and understand the concept.

What difficulties could you encounter and what precautions may you need to grapple?
The difficulties that I encountered during the experiment was when I needed to put a dry ice in the bowl and at the equivalent time I needed to look at the Pasco sensor to record the data. To overcome this problem, I asked my maid to look at the Pasco sensor every 30 seconds and report to temperature data.
Safety came first, that is wherefore I need to take the precautions in every experiment. I used insulated gloves to...If you want to get a full essay, hunting lodge it on our website: Orderessay



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