1. Determine the enthalpy because that this reaction:MgCl2(s) + 2NAOH(aq)------> Mg(OH)2(s)+2NACl(aq)Express her answer in kilojoules every mole to four significantfigures.The complying with table lists some enthalpy of formation values forselected substances.Substance ----------delta Hf (kJ/mol)
NAOH (aq)------ (-469.1)
MgCl2 (s)-------- (-641.8)
NaCl (aq)----- (-407.3)
Mg(OH)2 (s) ----- (-924.5)
H2O (l) --------- (-285.8)
2. Take into consideration the reaction:
Mg(OH)2 (s) ------> MgO (s) + H2O (l) through enthalpy that rxndelta Hrxn =37.50 kJ/mol.
You are watching: Determine the enthalpy for this reaction: mgcl2(s)+2naoh(aq)→mg(oh)2(s)+2nacl(aq)
What is the enthalpy of formation of MgO(s)?
Express her answer in kilojoules every mole to 4 significantfigures.
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