What happens
to the pressure of a gas if the
volume of gas is tripled at a
constant temperature?

The pressure will decrease 3 times

Explanation:

In this case, we apply Boyle Mariotte's Law: for a given gas mass at constant temperature, the pressure and volume vary inversely proportionally (the higher the pressure, the lower the volume and vice versa).

By increasing the volume 3 times, the pressure decreases 3 times to maintain the relationship: P1xV1 = P2xV2

> 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.