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April 20, 2014

Homework Help: chem

Posted by pal on Tuesday, March 29, 2011 at 7:21pm.

Consider the reaction that occurs on mixing 50.0 mL of 0.560 MNaHCO3 and 50.0 mL of 0.400 M NaOH at25oC.
(a) Write a balanced net ionic equation for thereaction.
(b) What is the pH of the resulting solution?
(c) How much heat (in joules) is liberated by thereaction?
(standard heats of formation are given in appendix B=> ÄHof(kJ/mol)NaHCO3= -950.8 and for NaOH = -425.6 )
(d) What is the final temperature of the solution to thenearest 0.1oC? You may assume that all the heatliberated is absorbed by the solution, the mass of the solution is100.0g, and its specific heat is 4.18 J/(g.C)

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