n9es8CarolGraz n9es8CarolGraz
  • 23-01-2017
  • Physics
contestada

When 0.250 moles of licl are added to 200.0g of water in a constant pressure?

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scme1702
scme1702 scme1702
  • 31-01-2017
Lithium Chloride releases 37 kJ of energy per mole when dissolved in water.
Energy released = 0.25 x 37
= 9.25 kJ
= 9,250 J
Temperature change of water may be calculated using
ΔH = mCpΔT
Cp = 4.18 J/g

ΔT = 9,250 / (200 x 4.18)
ΔT = 11.1 °C
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