Question

Which of the following represents Gay Lussac's law? I. $\frac{P}{T}=$ constant II. $P _{1} T _{2}= P _{2} T _{1}$ III. $P _{1} V _{1}= P _{2} V _{2}$ Choose the correct option.

• A. I, II and III
• B. II and III
• C. I and III
• D. I and II

Answer 1

Answer: (D)

I and II

Answer 2

$\frac{P}{T}=$ constant (gay lussac's law)
$\Rightarrow \frac{P_{1}}{T_{1}}=\frac{P_{2}}{T_{2}}$
$\Rightarrow P_{1} T_{2}=P_{2} T_{1} PV =$ constant
$P_{1} V_{1}=P_{2} V_{2}$ [boyle's law]