The value of ΔH° for the reaction below is -1107 kJ: 2Ba (s) + O2 (g) → 2BaO (s) How many kJ of heat are released when 5.75 g of Ba (s) reacts completely with oxygen to form BaO (s)? 23.2 kJ 26.3 kJ 96.3 kJ 46.4 kJ 193 kJ
Added by Diego R.
Step 1
33 g/mol. Then, we calculate the number of moles of Ba in 5.75 g: 5.75 g / 137.33 g/mol = 0.0419 mol The reaction shows that 2 moles of Ba react to release -1107 kJ of heat. Therefore, 1 mole of Ba would release -1107 kJ / 2 = -553.5 kJ of heat. Show more…
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