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Topic: THERMOCHEM  (Read 3023 times)

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Offline will.sheldon12

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THERMOCHEM
« on: October 16, 2014, 09:19:49 PM »
i have question that Im stuck with:

A student conducts an investigation to determine the heat of neutralization when 60.0mL of 0.500M sulfuric acid is reacted with 50.0mL of 1.00M sodium hydroxide.

init temp of NaOH = 23.4 C
init temp of H2SO4 = 23.4 C
maximum stabilized temp = 29.3 C

QUESTION:
A. Assuming that the calorimeter has a specific heat capacity of 1.0 * 10 ^1 J/C and that the density and specific heat capacity of the solution are the same as that of water, calculate the heat of neutralization for this reaction (q).

b. Find molar enthalpy for this reaction.

I thought it was q = (50+60g) (4.18)(29.3-23.4) = 2712 J  for A

THANKS
« Last Edit: October 16, 2014, 11:43:29 PM by will.sheldon12 »

Online billnotgatez

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Re: THERMOCHEM
« Reply #1 on: October 16, 2014, 10:57:45 PM »
Please read forum rules
you have to show you attempts

Offline will.sheldon12

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Re: THERMOCHEM
« Reply #2 on: October 16, 2014, 11:20:39 PM »
i thought it would be q = (50+60g) (4.18)(29.3-23.4) = 2712 J and this is where im stuck because i dont think this is right

Offline Borek

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Re: THERMOCHEM
« Reply #3 on: October 17, 2014, 03:41:50 AM »
i thought it would be q = (50+60g) (4.18)(29.3-23.4) = 2712 J and this is where im stuck because i dont think this is right

That's OK, but it is incomplete. You took care of the heat absorbed by the solution, you also need to take into account heat absorbed by the calorimeter.
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