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In: Chemistry

Find ∆H and ∆S for the following data. Calculate percent errors for the enthalpy and entropy...

Find ∆H and ∆S for the following data.

Calculate percent errors for the enthalpy and entropy of reaction using the following literature values: ∆H = 110 kJ/mol, ∆S = 380J/mol*K

Standardized HCl = .5087M

Ksp = [Na^+]^2[Borox^2-]

ln(Ksp) = -∆H/RT + ∆S/R

Temperature of solution;Amount of HCl needed to titrate borox;Volume aliquot

Trial 1 - 295K;2.50mL;5.8mL

Trial 2 - 316K;5.76mL;5.4mL

Trial 3 - 309K;4.57mL;5.6mL

Trial 4 - 305K;4.34mL;6.5mL

Trial 5 - 311K;7.70mL;5.8mL

Trial 6 - 310K;7.73mL;6.1mL

After I calculated everything and graphed it, I got ∆S to be 14.5495 J and I got ∆H to be 4,306 J.

My R^2 value was .415

My equation for best fit line was y = -5.18E+02x + 1.75E+00.

Please help me with this problem as I feel like I've done it totally wrong.

Expert Solution

queen_honey_blossom answered 2 years ago

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