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17 Nov 2019
Which of the following has a standard enthalpy of formation of zero (Delta Hf_t = 0) at 25 degree C and 1 atm? H_2O(l) CaH_12O (s) FeSO_4(s) FeSO_4(aq) Sa(s) Given the following data. Delta H degree (kJ/mol) S(s) + O_2(g) rightarrow SO_2(g) -395 S(g) + O_2(g) rightarrow SO_2(g) -618 Find the heat required for the reaction converting solid sulfur to gaseous sulfur at 208 K and 1 atm pressure. -1013 kJ/mol +618 kJ/mol -618 kJ/mol -223 kJ/mol +223 kJ/mol The enthalphy change for the equation 2HF(g) rightarrow H_2(g) + F_2(e) is 542.2 kJ. The enthalpy (or heat) of formation of HF(g) in kilojoules per mole must be -542.2 -271.1 -135.6 135.6 27.1
Which of the following has a standard enthalpy of formation of zero (Delta Hf_t = 0) at 25 degree C and 1 atm? H_2O(l) CaH_12O (s) FeSO_4(s) FeSO_4(aq) Sa(s) Given the following data. Delta H degree (kJ/mol) S(s) + O_2(g) rightarrow SO_2(g) -395 S(g) + O_2(g) rightarrow SO_2(g) -618 Find the heat required for the reaction converting solid sulfur to gaseous sulfur at 208 K and 1 atm pressure. -1013 kJ/mol +618 kJ/mol -618 kJ/mol -223 kJ/mol +223 kJ/mol The enthalphy change for the equation 2HF(g) rightarrow H_2(g) + F_2(e) is 542.2 kJ. The enthalpy (or heat) of formation of HF(g) in kilojoules per mole must be -542.2 -271.1 -135.6 135.6 27.1
Bunny GreenfelderLv2
30 Aug 2019