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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 substance does not evolve heat when dissolved in water Na2SO4 NaOH CaO NaCl?
Na2SO4 and NaCl
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 enthalpy of dissolution of NaCl in water?
The enthalpy of dissolution of NaCl in water is the amount of heat energy released or absorbed when NaCl dissolves in water.
What is the heat of formation for H2?
The heat of formation for H2 is 0 kJ/mol.
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 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.
What is the balanced equation for Na Cl gives Na cl?
The balanced equation would beNa + Cl -> NaCl Basically this reaction can be done by plunging a piece of sodium into a glass gas filled with chlorine gas. A lot of heat is produced in this reaction.
How does the heat of formation vary at different temperatures?
The heat of formation changes with temperature. At higher temperatures, the heat of formation tends to increase, while at lower temperatures, it tends to decrease.
What is the specific heat capacity of NaCl?
This value is 36,79 kJ/mol.
