Draw the product formed when the alcohol is oxidized with k2cr2o7. in some cases, no reaction occurs (if so, draw the given alcohol). ch3(ch2)6ch2oh

The given alcohol is octanol. It is a primary alcohol and will easily get oxidized in presence of strong oxidizing agent potassium dichromate.

The reaction is shown in the diagram below. The carbon bearing hydroxyl group will oxidized.

octanol will be oxidized completely to octanoic acid. It it would be tertiary alcohol which is hard to oxidized easily.

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.

the answer is option a.