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What is the heat change caused by dissolution of one mole of a substance?
The heat change caused by the dissolution of one mole of a substance is known as the enthalpy of dissolution or solution. It can be either exothermic (releasing heat) or endothermic (absorbing heat), depending on the interactions between the solute and solvent compared to the energy required to break the solute's bonds and solvent's interactions. This value is essential for understanding the thermodynamics of solutions and can be measured experimentally or estimated using Hess's law.
How many moles of NH4NO3(s) must be dissolved in water so that 73.0 kJ of heat is absorbed from the water?
To determine how many moles of NH4NO3(s) must be dissolved to absorb 73.0 kJ of heat, you need to know the heat of solution (enthalpy change) for NH4NO3. The dissolution of NH4NO3 is typically endothermic, with a heat of solution of about +25.7 kJ/mol. By dividing the total heat absorbed (73.0 kJ) by the heat of solution (25.7 kJ/mol), you find that approximately 2.85 moles of NH4NO3 must be dissolved to absorb that amount of heat.
What is the heat of solution for lithium chloride?
- 37.1 kj/mol is the heat of solution for lithium chloride.
When edta is insoluble in distilled water then how to make 0.01N edta solution?
use heat to heat the solution and add EDTA slowly to dissolve it.
If you heat a concentrated solution of a salt and it precipitates is the heat of solution for this salt exothermic or endothermic?
If a salt precipitates upon heating a concentrated solution, the heat of solution for this salt would be endothermic. This is because the process of dissolving the salt is absorbing heat from the surroundings, leading to a decrease in temperature and the precipitation of the salt.
How do you determine integral heat of solution of ammonium chloride by the calorimeteric method?
To determine the integral heat of solution of ammonium chloride by the calorimetric method, you would dissolve a known mass of ammonium chloride in a known volume of water in a calorimeter. Measure the temperature change that occurs during the dissolution process to calculate the heat absorbed or released. Use the formula q = mcΔT, where q is the heat, m is the mass of the solution, c is the specific heat capacity of the solution, and ΔT is the temperature change.
Can integral heat of solutions be zero?
Yes! But check your work... Perhaps half your curve is above the (say) x-axis and half is below. They could be canceling each other out. I had an integral heat solution problem last year. I got the answer '0' and thought I must've done something wrong, so I didn't hand my assignment in. Turns out it was zero all along!
How can joule law be demonstrated experimentally?
Joule's law can be demonstrated experimentally by using a setup where electrical energy is converted into heat energy as current flows through a resistor. By measuring the voltage across the resistor and the current passing through it, the power dissipated as heat (P = I^2 * R) can be calculated. The increase in temperature of the resistor due to the heat generated confirms Joule's law.
What is the term for Heat taken or released in a dissolving process?
I suppose that these are synonyms.
How many moles of NH4NO3(s) must be dissolved in water so that 73.0 kJ of heat is absorbed from the water?
To determine how many moles of NH4NO3(s) must be dissolved to absorb 73.0 kJ of heat, you need to know the heat of solution (enthalpy change) for NH4NO3. The dissolution of NH4NO3 is typically endothermic, with a heat of solution of about +25.7 kJ/mol. By dividing the total heat absorbed (73.0 kJ) by the heat of solution (25.7 kJ/mol), you find that approximately 2.85 moles of NH4NO3 must be dissolved to absorb that amount of heat.
What are the factors affecting of heat of solution?
Factors affecting the heat of solution include the nature of the solute and solvent, temperature, pressure, and the presence of any other substances in the solution. The heat of solution can vary based on the enthalpies of the solute and solvent, as well as the interactions between them. Temperature changes can also impact the heat of solution, with higher temperatures generally leading to higher heat of solution values.
What is the heat of solution for lithium chloride?
- 37.1 kj/mol is the heat of solution for lithium chloride.
How can you make a super saturated solution out of a saturated solution?
You have to Heat it!
How is heat of solution related to heat of reaction?
The heat of solution refers to the heat energy absorbed or released when a substance dissolves in a solvent, while the heat of reaction refers to the heat energy absorbed or released during a chemical reaction. The heat of solution can be a part of the overall heat of reaction if dissolution of a substance is involved in the chemical reaction.
How can one determine the enthalpy change of a reaction, specifically, how to find delta H of a reaction?
To determine the enthalpy change of a reaction, you can use Hess's Law or measure it experimentally using calorimetry. Hess's Law involves adding or subtracting the enthalpies of known reactions to find the overall enthalpy change. Calorimetry involves measuring the heat released or absorbed during a reaction to calculate the enthalpy change.
What controls the heat pump to determine whether it is in the heat cycle or the cooling cycle?
what controls the heat pump to determine whether it is in the heating cycle or cooling cycle
What does it mean to have a negative heat of solution?
Negative heat of solution means the process if exothermic. More bonds and/or stronger bonds were made compared to the amount of bonds broken. Positive heat oof solution is the opposite, so it is endothermic and etc.
