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The standard enthalpy of formation for sodium chloride is -411,12 kJ/mol.
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Why is an input of energy needed when forming NaCl?
The standard enthalpy of formation for NaCl solid is: -411,12 kJ/mol at 25 0C.
Is formation of table salt a physical or chemical change?
Formation of NaCl from chlorine and sodium is a chemical process.
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
What is the heat of formation of SO2?
The standard heat/enthalpy of formation of SO2 is -296.8 KJ
What substance does not evolve heat when dissolved in water Na2SO4 NaOH CaO NaCl?
Na2SO4 and NaCl
What are signs for a chemical reaction of NaCl?
For example formation of a precipitate as in the following reaction: NaCl + AgNO3 = AgCl(s) + NaNO3 Silver chloride is a white precipitate.
What is the heat of formation of n2O4?
The heat of formation of zinc nitrate is -2304 kJ.
How does NaCl melt ice?
Yes, because the heat of dissolution in water of NaCl is released and the freezing point of water lowered.
What is the formula for finding heat formation?
Heat of combustion of a hydrocarbon is based on the reaction: fuel + oxygen --> carbon dioxide + water (unless you have some nitrogen or sulfur in the fuel, in which case it gets a little more complex) The heat of formation of O2 is zero (O2 is the reference state) The heat of formation of CO2 is the same as the heat of combustion for carbon The heat of formation of H2O is the same as the heat of combustion for hydrogen To find the heat of formation of the fuel, you subtract the heat of combustion from the heats of formation - (weighted with the stoichiometric coefficients from the balanced reaction equation).
What is the specific heat capacity of NaCl?
This value is 36,79 kJ/mol.
What is released as sensible heat during the formation of clouds?
Latent heat.
If you have the heat of formation of a substance at a given temperature how do you calculate its heat of formation at a different temperature?
Say u know heat of formation at temperature Ta and u want to calculate it at a temperature Tb Delta H(at Tb) = Delta H(at Ta) + integral of (Heat capacity) from Ta to Tb
