Homework Answers
We can use the following formula
Q = mc∆T
Q = heat energy (Joules, J), m = mass of a substance (g)
c = specific heat (units J/g∙oC), ∆ is a symbol meaning "the change in"
∆T = change in temperature (oC Celcius)
Heat released by BaBr2 = Heat gained calorimeter + Heat gained by water
Heat gained by calorimeter = (25.93 oC- 22.79oC) x 1.77 J/oC = 5.5578 oC
Heat gained by water = 102.4 gm x 4.184 J/g∙oC x (25.93 oC- 22.79oC) = 1345.3066 Joules
Heat relased by BaBr2 = 5.5578 oC + 1345.3066 Joules = 1,350.8644 Joules = 1.35 Kilo Joules
Moles of BaBr2 = 297.14 g/mol
Moels of BaBr2 = 19.35 gm / 297.14 g/mol = 0.06512 Moles
Enthalpy of dissolution of BaBr2 = 1.35 Kilo Joules / 0.06512 Moles = 20.73 Kilo Joules
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When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution...
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Thermometer When a solid dissolves in water heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 2.06 g of KC104) are dissolved in 115.80 g of water, the temperature of the solution drops from 22.30 to 20.66 °C. Based on the student's observation, calculate the enthalpy of dissolution of KCIO() in kJ/mol. Nested Styrofoam cups Assume...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be deter...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer Cardboard or In the laboratory a general chemistry student finds that when 8.96 g of K2SOs) are dissolved in 111.20 g of water, the temperature of the solution drops from 24.21 to 21.29 C. Styrofoam Bd The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate...
please help When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving)...
please help
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 1.61 g of CaCl(s) are dissolved in 109.50 g of water, the temperature of the solution increases from 25.78 to 28.44 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in...
Thermometer When a solid dissolves in water heat may be evolved or absorbed. The heat of...
Thermometer When a solid dissolves in water heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 2.23 g of CaBr (s) are dissolved in 118.90 g of water, the temperature of the solution increases from 25.64 to 27.99 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a...
please help Thermometer When a solid dissolves in water, heat may be evolved or absorbed. The...
please help
Thermometer When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 9.91 g of BaBry(s) are dissolved in 113.50 g of water, the temperature of the solution increases from 22.18 to 23.76 °C, The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in...
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Thermometer When a solid dissolves in water, heat may be evolved or absorbed. The heat of aissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 11.13 g of CsBr(s) are dissolved in 114.50 g of water, the temperature of the solution drops from 25.61 to 22.35 °C The heat capacity of the calorimeter (sometimes refered to as the calorimeteγ constant) was determined in a separate...
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When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 6.42 g of K2SO4(s) are dissolved in 116.20 g of water, the temperature of the solution drops from 25.36 to 23.41 °C. Based on the student's observation, calculate the enthalpy of dissolution of K,SO (s) in kJ/mol. Assume the specific heat of the solution is...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer In the laboratory a general chemistry student finds that when 9.66 g of CSCI(S) are dissolved in 106.80 g of water, the temperature of the solution drops from 22.55 to 19.99 °C. Cardboard or Styrofoam lid The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer In the laboratory a general chemistry student finds that when 1.69 g of CoSO4(s) are dissolved in 106.60 g of water, the temperature of the solution increases from 25.01 to 26.98 °C. Cardboard or Styrofoam lid The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate...
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Thermometer When a solid dissolves in water heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 2.06 g of KC104) are dissolved in 115.80 g of water, the temperature of the solution drops from 22.30 to 20.66 °C. Based on the student's observation, calculate the enthalpy of dissolution of KCIO() in kJ/mol. Nested Styrofoam cups Assume...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer Cardboard or In the laboratory a general chemistry student finds that when 8.96 g of K2SOs) are dissolved in 111.20 g of water, the temperature of the solution drops from 24.21 to 21.29 C. Styrofoam Bd The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate...
please help
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 1.61 g of CaCl(s) are dissolved in 109.50 g of water, the temperature of the solution increases from 25.78 to 28.44 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in...
Thermometer When a solid dissolves in water heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 2.23 g of CaBr (s) are dissolved in 118.90 g of water, the temperature of the solution increases from 25.64 to 27.99 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a...
please help
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