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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