![I. What is the heat capacity of 185g of liquid water? How many Kilojoules are needed to raise the temperature of 10 kg of liquid water from 24.6°C to 46.2°C and 38.5 mol of water from 38.1°C to 79.4°C? Ans: 774.04J/gC, 903.74Kj, 119.75KJ 2. A 2.200 g sample of quinone, C&402. is burned in a bomb Calorimeter whose total heat capacity is 7.854 kJ C. The temperature of calorimeter increases from 23.44°C to 30.57C. What is the heat of combustion per gram of quinone? Per mole of quinone? S 3. From the data below for the reaction NO2+CO- NO+ CO2, give the rate law and the lue of the equilibrium constant K. The value of the initial rate when [NO] .-.75M and [CO]o 20M is what? Trial No NO2] [CO initial rate, M/s 0.40M 3.1 10 2. 3. Ans: Rate K [NO,] K-4.96 101, Initial Rate-2.79 10 0.25M 0.25M 0.80M 3.1 10 0.50M 0.80M 1.210 4. What is the pH of a 0.040 M solution of HCIOs and 0.011 M solution of Ca(O1H)2. 5 Ans: 1.40, 12.04 5. A student prepared a 0.10 M solution of formic acid, HCHO, and found its plI at 25°C equal to 2.38. Calculate Ka for formic acid at this temperature. 5 Ans: 1.81+10 6. Calculate the fluoride ion concentration and pH of a solution containing 0.10 mol of HCI and 0.20 mol of HF in 1 L of solution. Ka for HF equals 6.8 10-. 5 Ans: pH 994,F-]-00133 7. A buffer is made by adding 0.300 mol HC2H O2 and 0.300 mol NaC2H302 to enough water to make 1.00L of solution. The pH of the buffer is 4.74. Calculate the pH of this solution (a) after 0.020 mol of NaOH is added (neglect any volume change); (b) after 0.020 mol of HCl is added (again, neglect volume changes).Ka-1.8x10. 5 a) pH 4.8, b) pH-4.68 8. IfKc 6.4x107 for 2C02 (g)-+2C0 (8)+ 0: (8), what is the equilibrium concentration of CO formed from .350M CO2. What is the value of Kp at room temperature. (R .0821) [CO] 6.7*10, Крс 1.57* 10.5 9. For the reaction N2 (g)+3H2 (g)- 2NHs (g) 8GP of NH, is -16.,66 kJ/mol. Calculate 6G, and 6G at 298 K for a reaction mixture that consists of 1 atm N2, 3 atm H2 and ,0.50 atm NHs, R 8.314 J/mol.K](http://img.homeworklib.com/questions/cefc1f20-8161-11ec-b23b-25f627e2735e.png?x-oss-process=image/resize,w_560)
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I. What is the heat capacity of 185g of liquid water?...
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184...
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184 J/g K) at initial temperature 80.000 C. A salt weighing 5.445 g is quickly added. The salt has a molar mass of 250.465 g/mol. The final temperature of the solution is 33.49 C. Assume no heat loss to the surroundings. Assume the specific heat capacity of the solution is equal to that of pure water, and that the mass of the solution is equal...
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184...
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184 J/g K) at initial temperature 80.000 C. A salt weighing 5.451 g is quickly added. The salt has a molar mass of 124.742 g/mol. The final temperature of the solution is 73.937 C. Assume no heat loss to the surroundings. Assume the specific heat capacity of the solution is equal to that of pure water, and that the mass of the solution is equal...
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184...
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184 J/g K) at initial temperature 80.000 C. A salt weighing 7.253 g is quickly added. The salt has a molar mass of 149.325 g/mol. The final temperature of the solution is 7.532 C. Assume no heat loss to the surroundings. Assume the specific heat capacity of the solution is equal to that of pure water, and that the mass of the solution is equal...
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184...
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184 J/g K) at initial temperature 80.000 C. A salt weighing 5.398 g is quickly added. The salt has a molar mass of 497.886 g/mol. The final temperature of the solution is 8.675 C. Assume no heat loss to the surroundings. Assume the specific heat capacity of the solution is equal to that of pure water, and that the mass of the solution is equal...
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184 J/g K) at initial te...
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184 J/g K) at initial temperature 80.000 C. A salt weighing 7.228 g is quickly added. The salt has a molar mass of 211.503 g/mol. The final temperature of the solution is 8.795 C. Assume no heat loss to the surroundings. Assume the specific heat capacity of the solution is equal to that of pure water, and that the mass of the solution is equal...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution...
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 id In the laboratory a general chemistry student finds that when 19.35 g of BaBr(s) are dissolved in 102.40 g of water, the temperature of the solution increases from 22.79 to 25.93 °C 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...
please help When a solid dissolves in water, heat may be evolved or absorbed. The heat...
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. In the laboratory a general chemistry student finds that when 0.85 g of CaCl2(s) are dissolved in 100.10 g of water, the temperature of the solution increases from 24.36 to 25.89 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be...
a. When a solid dissolves in water, heat may be evolved or absorbed. The heat of...
a. 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 16.11 g of BaCl2(s) are dissolved in 118.70 g of water, the temperature of the solution increases from 22.98 to 25.41 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.71...
1. The heat capacity of a calorimeter is given as 1264 J/oC. Suppose the enthalpy of...
1. The heat capacity of a calorimeter is given as 1264 J/oC. Suppose the enthalpy of solution for calcium chloride (MM=111 g/mol) in water is given by the thermochemical equation: CaCl2(s) + H2O(l) → Ca2+(aq) + 2Cl-(aq) ΔH = -81.0 kJ/mol. Calculate the temperature change if 11.1 g of calcium chloride is dissolved in water in the calorimeter. 2. Given the following data, calculate ΔH for the reaction of two moles of carbon monoxide with oxygen gasto give carbon dioxide....
A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184 J/g K) at initial temperature 80.000 C. A salt weighing 7.253 g is quickly added. The salt has a molar mass of 149.325 g/mol. The final temperature of the solution is 7.532 C. Assume no heat loss to the surroundings. Assume the specific heat capacity of the solution is equal to that of pure water, and that the mass of the solution is equal...
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 id In the laboratory a general chemistry student finds that when 19.35 g of BaBr(s) are dissolved in 102.40 g of water, the temperature of the solution increases from 22.79 to 25.93 °C 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...
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. In the laboratory a general chemistry student finds that when 0.85 g of CaCl2(s) are dissolved in 100.10 g of water, the temperature of the solution increases from 24.36 to 25.89 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be...
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