In a pressure cooker, a lid is screwed tightly onto a pot so that the air pressure in the pot is increased. What effect, if any, will this have on the boiling point of water in the pot?A) The boiling point will be raised. B) The boiling point will be lowered. C) The boiling point will be unaffected. D) None of the above.

Answer :

meerkat18
We use the ideal gas law PV= nRT to answer this problem. We can see in this relation that pressure is proportional to the temperature of the gas. Hence when pressure increases, temperature increases and vise versa. Since the screwing tightly the lid increases, the boiling point must also increase. Answer is A.

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