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The standard enthalpy of formation for NaCl solid is: -411,12 kJ/mol at 25 0C.

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9y ago

The standard enthalpy of formation, for solid NaCl: -411,12 kJ/mol at 25 0C.

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Q: Why is an input of energy needed when forming NaCl?
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How many grams of nacl are needed to make 3L of 6M nacl?

Moles of NaCl=6*3=18mol Mass needed=[35.5+23]*18=1053g


What is NaCl molecule or compound?

Sodium chloride is a compound forming large lattices.


Why is AgNo3 and NaCl least desirable?

These compounds react forming a white insoluble precipitate - silver chloride: NaCl + AgNO3 = AgCl + NaNO3


What happens when you have NaCl and H20 and then heat it up?

first nothing seems to happend, but minutes later a sedimentation or deposit of nacl will be clearly seen. this nacl will be forming on the sorrounding of the recipient were you heat up the solution


Can all compounds be separated into their constituent elements?

Yes, but the process is not always easy. In some case a lot of energy might be needed. For example, electrolysis can separate Na and Cl from NaCl but it has to be done at high temperatures using molten NaCl.


How would you prepare 400ml of a 0.24M NaCl solution?

We first calculate the amount, in moles, of NaCl that we will need.Amount of NaCl needed = 0.24 x 400/100 = 0.096mol. Mass of NaCl needed = (23.0 + 35.5) x 0.096 = 5.616g So to produce 400ml of 0.24M NaCl solution, accurately add 5.616 grams of NaCl to 400ml of deionised water.


What type of bond is NaCl and why?

Sodium chloride is a polar salt with ionic bonds, forming crystalline lattices.


Is sodium chloride an example of a solution?

Sodium chloride is a solid but NaCl can be dissolved in water forming a solution.


In forming a water solution what process does an ionic compound undergo?

hydration of the ions- this forms aqua complexes. The energy of formation of the aqua complexes has to be greater than the energy holding the crystal together. This is true for NaCl which is a soluble compound, but untrue for calcium chloride which has very low solubility.


Is a salt getting formed a chemical change or physical change?

I think it is a chemical change Forming underground it is a chemical change Salt forming from a saline solution for example h20 + NaCl --delta-> h2 + O2 + NaCl (This is not a balanced solution) This is a physical change, since there is no change to the Sodium Chloride


What is cohesive energy in case of NaCl?

If you think to lattice energy the value is 789 kJ/mol.


What final volume would be needed in order to prepare a 0.50 M NaCl solution from 10.0 g of NaCl?

The volume is 342 mL.