Which of the following is liquid at room temperature?

Question

Which of the following is liquid at room temperature? (A)  CH3I-66°C,42°C  (B) CH3Br-94°C,3°C  (C) C2H5Cl-139°C,12°C (D) CH3F-115°C,78°C

Tardigrade Admin · Accepted Answer

CH 3 Br ( B . P .=3° C ) CH 3 F (B. P. =-78° C ) and C 2 H 5 Cl (B. P. =12° C ) are all gases at room temperature as their boiling point is much less than room temperature i.e., they boil (vaporise) at a temperature much less than room temperature. But CH 3 Ihas B. P. =42° which is above the room temperature so, it is liquid at room temperature and solidify at around -66° C.

Q. Which of the following is liquid at room temperature?

$C H_{3} I - 6 6^{\circ} C, 4 2^{\circ} C$

$C H_{3} B r - 9 4^{\circ} C, 3^{\circ} C$

$C_{2} H_{5} Cl - 13 9^{\circ} C, 1 2^{\circ} C$

$C H_{3} F - 11 5^{\circ} C, 7 8^{\circ} C$

Q. Which of the following is liquid at room temperature?

CH3​I−66∘C,42∘C

CH3​Br−94∘C,3∘C

C2​H5​Cl−139∘C,12∘C

CH3​F−115∘C,78∘C

$C H_{3} I - 6 6^{\circ} C, 4 2^{\circ} C$

$C H_{3} B r - 9 4^{\circ} C, 3^{\circ} C$

$C_{2} H_{5} Cl - 13 9^{\circ} C, 1 2^{\circ} C$

$C H_{3} F - 11 5^{\circ} C, 7 8^{\circ} C$