Two solids react: ammonium thiocyante with barium hydroxide

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The two solids are mixed in the beaker and water is placed beneath the beaker on the wood.  The beaker becomes frozen on the wood.

 

 Identify the system and surroundings.

Is energy transferred into or out of the system?

Is the reaction endothermic or exothermic?

Does the enthalpy increase or decrease? Relate to the enrgy transfer.

Sketch the graph to show the change.  Label axesandfive other labels.

Are the products more or less stable? Relate this to the PE.

Is the reaction favored based upon enthalpy? Relate to stability.

 

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