The standard enthalpy of formation for NaCl solid is: -411,12 kJ/mol at 25 0C.
The standard enthalpy of formation, for solid NaCl: -411,12 kJ/mol at 25 0C.
Moles of NaCl=6*3=18mol Mass needed=[35.5+23]*18=1053g
Sodium chloride is a compound forming large lattices.
These compounds react forming a white insoluble precipitate - silver chloride: NaCl + AgNO3 = AgCl + NaNO3
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
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.
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.
Sodium chloride is a polar salt with ionic bonds, forming crystalline lattices.
Sodium chloride is a solid but NaCl can be dissolved in water forming a solution.
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.
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
If you think to lattice energy the value is 789 kJ/mol.
The volume is 342 mL.