Question

what gas law states that pressure and temperature are directly proportional at constant volume and moles?
answer:
a boyles law
b charless law
c gay - lussacs law (amontons law)
d avogadros law
e combined gas law

Explanation:

• Boyle's Law: States that pressure and volume are inversely proportional at constant temperature and moles ($P_1V_1 = P_2V_2$).
• Charles's Law: States that volume and temperature are directly proportional at constant pressure and moles ($\frac{V_1}{T_1}=\frac{V_2}{T_2}$).
• Gay - Lussac's Law (Amonton's Law): States that pressure and temperature are directly proportional at constant volume and moles ($\frac{P_1}{T_1}=\frac{P_2}{T_2}$).
• Avogadro's Law: States that volume and moles are directly proportional at constant pressure and temperature ($\frac{V_1}{n_1}=\frac{V_2}{n_2}$).
• Combined Gas Law: Combines Boyle's, Charles's, and Gay - Lussac's Laws ($\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$).

Since the question asks for the law where pressure and temperature are directly proportional at constant volume and moles, Gay - Lussac's Law (Amonton's Law) is the correct one.

Answer:

C. Gay - Lussac's Law (Amonton's Law)