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When 5.00 grams of sodium hydroxide dissolves in 100. grams of water the temperature rises from...

  1. When 5.00 grams of sodium hydroxide dissolves in 100. grams of water the temperature rises from 25.0 oC to 38.0 oC. Is this reaction endothermic or exothermic? EXPLAIN. Calculate the value of ∆H (kJ/mol) and its sign. Draw an enthalpy graph and clearly label all parts.

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