Solute Solvent Soluble or insoluble? Is the solute polar, nonpolar, or ionic? Is the solvent polar, nonpolar, or ionic? Vinegar Water Iodine solution Water Rubbing alcohol Vegetable oil Salt Vegetable oil Water Rubbing alcohol Vinegar Rubbing alcohol Iodine solution Vinegar Vegetable oil Vinegar

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

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