Say that 150 mL of a 1.50 M NaOH solution with a mass of 151 grams is added to 2

Question

Say that 150 mL of a 1.50 M NaOH solution with a mass of 151 grams is added to 250 mL of a 1.00 M HCl solution with a mass of 252 grams in a coffee cup calorimeter. Before the mixing the temperature of each solution was 22 degrees celcius. After the reaction was complete, the temperature of the mixed solutions was 30.00 degrees celcius. The specific heat of the mixed solutions is essentially the same as water's, 41.184 J/g degrees celcius.

A. Calculate the amount of heat generated by this reaction.

B. How many moles of HCl were added to the calorimeter?

C. How many moles of NaOH were added to the calorimeter?

Explanation / Answer

Q= mCp(Tf-Ti)

Base Data:

V = 150 ml

m = 151 g

M = 1.5 NaOH

Acid Data

V = 250 ml

m = 252 g

M = 1 HCl

Ti = 22

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