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How much energy will be released?

  • #1

Homework Statement


The enthalpy of neutralization for the reaction of a strong acid with a strong base is -56 kJ/mol of water produced. How much energy will be released when 195.0 mL of 0.400 M HCl is mixed with 155.5 mL of 0.500 M NaOH?

Homework Equations


c=n/V

The Attempt at a Solution


to get n (from c=n/V), we can do c*V.
In this case, the total moles is then 0.4*.195 + .1555 * 0.5 moles
and multiplying that by -56kJ/mol gave me -8.722 kJ, but that's wrong... Why?
 

Answers and Replies

  • #2
BvU
Science Advisor
Homework Helper
2019 Award
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Do all moles react ? Write out the 'reaction' equation and underneath put the # of moles for each.
 

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