Two chemicals in the liquid phase are mixed together in the same container. What change could indicate that the liquids are chemically reacting?

the temperature of the container stays the same

the liquids mix evenly

the temperature of the container rises

the liquids form two layers, like oil on water

if the temperature of the container rises, it could show that an exothermic reaction is taking place in the container. The other options don't really give any information away that would indicate that chemical reaction is happening.

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.