Answer all: Use the graph of Temperature (degree C) versus Time (s) provided to

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Answer all:

Use the graph of Temperature (degree C) versus Time (s) provided to answer the following questions: What is the initial temperature? What is the final temperature? The Cp for the calorimeter (including the HCl solution and the Mg) was calculated to be 0.247 kJ / degree C. For the temperature curve shown above, 0.174 g Mg was reacted with HCI. What is the Delta H of the reaction? To calibrate your calorimeter cup, you first put 45 mL of cold water in the cup, and measure its temperature to be 21.7 degree C. You then pour 59 mL of hot water, temperature = 50.1 degree C, into the cup and measure the temperature every thirty seconds over a 10-minute period. You extrapolate this cooling curve back to the time of addition and find that the final temperature after mixing is 36.2 degree C. What is the heat change of the hot water, qHw? (Assume the density of the water is 1.00 g / mL, and remember that the specific heat of water is 4.184 J / g-K or J / g-degree What is the heat change of the cold water, qcw? What is the heat change of the calorimeter cup, qcup? What is the heat heat capacity of the calorimeter cup, Ccup? You would like to measure the heat of neutralization of an acid with a base. You mix 225 ml each of 0.65 M HNO3 and 0.65 M LiOH, both at a temperature of 18.1 degree C in a calorimeter cup equilibrated to that same temperature. After following the temperature change for 10 minutes and extrapolating it back to the time of addition, you find that the final temperature after mixing was 22.3 degree C. Previously you measured the heat capacity of the calorimeter cup (Ccup) to be 47 J / degree C. Assuming that the density of the two solutions is 1.00 g / mL, and that their specific heats are the same as water, 4.184 J / g- degree C, What is the heat absorbed by the two solutions, qsoln? What is the heat absorbed by the calorimeter cup, qcup? What is the heat change for the neutralization reaction, qrxn? What is the Delta H for the neutralization? Write the net ionic equation for this neutralization reaction, including the states of matter (i.e. H+ (aq)) for the reactants and products. Given the following data: Find the Delta H of the following reaction:

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