The following data was collected after running a calorimetric experiment using t

Question

The following data was collected after running a calorimetric experiment using three salts. Table 1: delta H sol Values of Salts The data collected for each experiment is as follows. Experiment 1: 2.51 g of unknown salt added to 185 mL of water resulted in a delta T value of 0.6 degree C. Experiment 2: 2.51 g of unknown salt added to 185 mL of water resulted in delta T value of 0.1 degree C. Experiment 3: 2.51 g of unknown salt added to 185 mL of water resulted in delta T value of -1.5 degree C. Calculate the value of q for each of the experiments. (Assume that the heat capacity of water is 4.1801 J/g degree C.)

Explanation / Answer

We calculate the heat as:

Q = m*Cp*?T

NOTE: Suppose 185 ml of water = 185 grams of water

Q1 = m1*Cp?T1 = 185g*4.18 J/g

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