what is the procedure for heating a metal to an exact but measured temperature E
ID: 983175 • Letter: W
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what is the procedure for heating a metal to an exact but measured temperature Experiment 25 Prelaboratory Assignment Lob Sec.Name Nlame t. Esperinsenial Procedure, Part A.1, What is Calorimetry Desk 4o. Experimental Procedure, Parts A.4, 5 a. When a metal at a higher temperature is transferred to water at a lower semperature, besat is inevitubly lost to 2. calorimeter (Figure 25.4). Will this unmeasured beat loss increase or decrease the calculated value of the secn heat of the metal? Explain. See equation 25.3. lost to the b. Explain why the extrapolated temperature is used to determine the masimam temperature of the unixture emperature of the mixture rather than the highest recorded temperature in the experiment. See Figure 25.5 coffee cup calorimeters (Part B). Brett added 50.0 mL of 1.10 M HCI to his solution of NaOH: Dale added 45.5 mL 1.10 M HCI (equal moles) to his NaOH solution. Lyndsay added 50.0 mL of 1.00 M HCI to her NaOH solution. Ea student recorded the temperature change and calculated the enthalpy of neutralization. 3. Experimental Procedure, Part B. Three student chemists measured 50.0 mL of 1.00 M NaOH in separate Styrofoas Identify the student who observes a temperature change that will be different from that observed by the other chemists. Explain why and how (higher or lower) the temperature will be different. ExperimentExplanation / Answer
For comparatively high temperatures, heat the metal in a thermostatically controlled oven.
For lower temperatures ( up to 100°C) , use a water bath and thermometer to heat the metal.
For temperatures above 100°C up to say 150°C you can use oil bath etc
This means that immersing the metal in water or oil does not affect the metal. A controlled temperature oven is probably the best.
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