True or False: Chlorine reacts with hydrocarbons producing heat or fire.

Chlorine does indeed react with hydrocarbons, and this reaction can produce heat or even fire under certain conditions. Chlorine is a strong oxidizer, and when it comes into contact with hydrocarbons, it can initiate a combustion reaction, particularly when there is sufficient energy or another reactant to support this process.

When chlorine reacts with hydrocarbons, especially in the presence of heat or a suitable ignition source, it can produce various byproducts and release energy, which can result in flames or heat generation. This can occur at standard temperatures but is considerably more significant when high temperatures are present.

While concentrations of chlorine and hydrocarbons can influence the reactivity and the extent of the reaction, the essence of chlorinated hydrocarbon reactions can lead to thermal hazards. Therefore, the assertion that chlorine reacts with hydrocarbons producing heat or fire is fundamentally correct.