Question
You want to determine the molar heat of solution of sodium chloride using a 10.0 g sample of NaCl(aq) and 50.0 mL of water in a coffee cup calorimeter. Which of the following equations would you use? Assume the specific heat of the solution is the same as the specific heat of water.
A. q = (50.0 g)(4.18 J/g K)(Ti - Tf)
B. q = [(10.0 g)(4.18 J/g K)(Tf - Ti)]/[10.0 g/(58.44 g/mol)]
C. q = (60.0 g)(4.18 J/g K)(Tf - Ti)
D. q = (60.0 g)(4.18 J/g K)(Ti - Tf)
E. q = [(60.0 g)(4.18 J/g K)(Tf - Ti)]/[10.0 g/(58.44 g/mol)]
A. q = (50.0 g)(4.18 J/g K)(Ti - Tf)
B. q = [(10.0 g)(4.18 J/g K)(Tf - Ti)]/[10.0 g/(58.44 g/mol)]
C. q = (60.0 g)(4.18 J/g K)(Tf - Ti)
D. q = (60.0 g)(4.18 J/g K)(Ti - Tf)
E. q = [(60.0 g)(4.18 J/g K)(Tf - Ti)]/[10.0 g/(58.44 g/mol)]
Answers
I wouldn't use any of them.
But one of these has to be the answer.
I guess the intent is to heat ALL of the solution with the same specific heat of water so I would go with E.
Ok. Thanks once again!
Related Questions
if 58.44 g of sodium chloride is dissolved in 0.5 liter of water what is the molarity of the sodium...
Ravi prepared a solution of sodium chloride by mixing 5.85g of salt in 1 liter of water.
a)find mol...
Ravi prepared a solution of sodium chloride by mixing 5.85g of salt in 1l of water.Find molar mass o...
sodium chloride has a molar mass of 58.4g/mole. how many grams of sodium chloride are needed to make...