We did a lab where we dissolved calcium chloride and ammonium nitrate in water (calorimeter), and...
We did a lab where we dissolved calcium chloride and ammonium nitrate in water (calorimeter), and used the temperature change of the water to calculate the molar enthalpy of solution for each compound. I got -68.6kJ/mol for calcium chloride and +27.6kJ/mol for ammonium nitrate. There is a section in our lab report that states, "discuss the relationship between the responding and manipulated variable, and give reasons as to why this relationship exists." Our teacher told us that the manipulated variable is the compound we dissolved and the responding variable is the temperature change, therefore the molar enthalpy of solution, for each compound. Answer the quoted question in detail, please. The question is: "discuss the relationship between the responding and manipulated variable, and give reasons as to why this relationship exists."
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We did a lab where we dissolved calcium chloride and ammonium
nitrate in water (calorimeter), and...
When 23.6 g of calcium chloride, CaCl2, was dissolved in water in a constant-pressure calorimeter, the...
When 23.6 g of calcium chloride, CaCl2, was dissolved in water in a constant-pressure calorimeter, the temperature rose from 25.0 C to 38.7 C. If the heat capacity of the solution and the calorimeter is 1258 J/C, what is the enthalpy change when 0.710 mol of calcium chloride dissolves in water? The solution process is CaCl2(s) --> Ca2+(aq) + 2Cl–(aq)
The change in enthalpy for dissolving ammonium nitrate in water is 26 kJ/mol. Determine the amount...
The change in enthalpy for dissolving ammonium nitrate in water is 26 kJ/mol. Determine the amount of ammonium nitrate (in grams) that was dissolved in water to make 50.0 mL of solution if the temperature of a coffee cup calorimeter changes from 25.3°C to 21.5°C. Assume the density of the solution is 1.0 g/mL and the heat capacity of the solution is 4.2 J/g°C.
In a lab. silver nitrate, AgNO_3, is dissolved in water until no solid is observed in...
In a lab. silver nitrate, AgNO_3, is dissolved in water until no solid is observed in the container Then a solution of sodium chloride. NaCl. is added to the container When you combine these aqueous solutions, there is no noticeable change in temperature, however, a solid properties and there is a slight change of color. Which statements about the lab experiment involving silver nitrate and a sodium chloride solution are true?
A coffee cup calorimeter initially contains 135g of water at 22.0oC. Calcium chloride (21.0g) at the...
A coffee cup calorimeter initially contains 135g of water at 22.0oC. Calcium chloride (21.0g) at the same temperature is added to the water and after the CaCl2 dissolves the final temperature 46.0 degrees C. Calculate the molar enthalpy change for dissolving the salt in KJ/mol. Assume the solution has a heat capacity of 4.184 J/C g and assume no heat is lost to the surrounding or the calorimeter.
Enthalpy from a reaction What is the change in temperature when 3.00 grams of calcium chloride...
Enthalpy from a reaction
What is the change in temperature when 3.00 grams of calcium chloride is dissolved in 100 mL of water? 5.19 loc Given the change in the temperature from adding 3.00 grams of calcium chloride to 100.00 mL of water, calculate the enthalpy of solution for calcium chloride in units of kJ/mol. kJ/mol
B. Calcium nitrate and ammonium fluoride react to form calcium fluoride, dinitr and water vapor. How...
B. Calcium nitrate and ammonium fluoride react to form calcium fluoride, dinitr and water vapor. How many moles of dinitrogen monoxide are produced after 16.8 g of calcium nitrate and 17.50 g of ammonium fluoride react completely? How many grams How many moles of dinitrogen monoxide are produced? C. Freon-12 (CCl2F2) is synthesized by the reaction between carbon tetrachloride and antimony(III) fluoride at a temperature slightly above room temperature. Balance the following chemical equation (Hint: Balance F first.): CCL) +...
When 0.1002g o ammonium chloride is dissolved in 225mL of water in a constant pressure calorimeter,...
When 0.1002g o ammonium chloride is dissolved in 225mL of water in a constant pressure calorimeter, the temperature drops from 25.3 degrees celsius to 13.4 degrees celsius. What is the heat absorbed or released per gram and per mole of ammonium chloride.
Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and...
Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider. When the divider is broken, the ammonium nitrate dissolves according to the following endothermic reaction: NH4NO3(s) → NH(aq) + NO3 (aq) In order to measure the enthalpy change for this reaction, 1.25 g of NH4NO3 is dissolved in enough water to make 25.0 mL of solution. The initial temperature is 25.8 °C and the final temperature (after...
Question #2 -/1 points How many grams of calcium nitrate need to be dissolved in 75...
Question #2 -/1 points How many grams of calcium nitrate need to be dissolved in 75 mL of water to form a solution that has a freezing point of -3.2 deg C? grams of calcium nitrate Evaluate Question #3 -/1 points What is the freezing point in °C) of a solution of 8.0 g of carbon tetrachloride, CCl4, in 80.0 g of benzene, C6H6. For benzene, Tp = 5.5°C and Kf = 5.12 deg kg mole?? Freezing point of solution...
4. In an experiment, when 23.6 of calcium chloride, CaCl2 were dissolved in water in a...
4. In an experiment, when 23.6 of calcium chloride, CaCl2 were dissolved in water in a coffee- cup calorimeter (at constant pressure), the temperature rose from 25.0°C to 38.7°C. The dissolution process is: CaCiz(s) - Ca2+ (aq) + 2C1-(aq) The heat capacity of the solution and the calorimeter is 1258 J/°C. The molar mass of CaCl2 is 110.98 g/mol. 1) Determine the heat that was absorbed by the solution and calorimeter. (1 point) 2) Determine the heat that was released...
In a lab. silver nitrate, AgNO_3, is dissolved in water until no solid is observed in the container Then a solution of sodium chloride. NaCl. is added to the container When you combine these aqueous solutions, there is no noticeable change in temperature, however, a solid properties and there is a slight change of color. Which statements about the lab experiment involving silver nitrate and a sodium chloride solution are true?
Enthalpy from a reaction
What is the change in temperature when 3.00 grams of calcium chloride is dissolved in 100 mL of water? 5.19 loc Given the change in the temperature from adding 3.00 grams of calcium chloride to 100.00 mL of water, calculate the enthalpy of solution for calcium chloride in units of kJ/mol. kJ/mol
B. Calcium nitrate and ammonium fluoride react to form calcium fluoride, dinitr and water vapor. How many moles of dinitrogen monoxide are produced after 16.8 g of calcium nitrate and 17.50 g of ammonium fluoride react completely? How many grams How many moles of dinitrogen monoxide are produced? C. Freon-12 (CCl2F2) is synthesized by the reaction between carbon tetrachloride and antimony(III) fluoride at a temperature slightly above room temperature. Balance the following chemical equation (Hint: Balance F first.): CCL) +...
Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider. When the divider is broken, the ammonium nitrate dissolves according to the following endothermic reaction: NH4NO3(s) → NH(aq) + NO3 (aq) In order to measure the enthalpy change for this reaction, 1.25 g of NH4NO3 is dissolved in enough water to make 25.0 mL of solution. The initial temperature is 25.8 °C and the final temperature (after...
Question #2 -/1 points How many grams of calcium nitrate need to be dissolved in 75 mL of water to form a solution that has a freezing point of -3.2 deg C? grams of calcium nitrate Evaluate Question #3 -/1 points What is the freezing point in °C) of a solution of 8.0 g of carbon tetrachloride, CCl4, in 80.0 g of benzene, C6H6. For benzene, Tp = 5.5°C and Kf = 5.12 deg kg mole?? Freezing point of solution...
4. In an experiment, when 23.6 of calcium chloride, CaCl2 were dissolved in water in a coffee- cup calorimeter (at constant pressure), the temperature rose from 25.0°C to 38.7°C. The dissolution process is: CaCiz(s) - Ca2+ (aq) + 2C1-(aq) The heat capacity of the solution and the calorimeter is 1258 J/°C. The molar mass of CaCl2 is 110.98 g/mol. 1) Determine the heat that was absorbed by the solution and calorimeter. (1 point) 2) Determine the heat that was released...
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