Calculate the Change in Enthalpy When 52

question 62

Multiple Choice

Calculate the change in enthalpy when 52.0 g of solid chromium at 25°C and 1 atm pressure is oxidized.(ΔH°_f for Cr₂O₃(s) is -1135 kJ/mol.)
4Cr(s) + 3O₂(g) → 2Cr₂O₃(s)

• A)-1135 kJ
• B)-284 kJ
• C)-568 kJ
• D)+1135 kJ
• E)+568 kJ

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