Question

The gases CO,(9) and NH, (9) can be liquefied at 20°C by compressing them to sufficiently high pressures. A student claims that NH,) can be liquefied at a lower pressure than C0,G) can be liquefied. Which of the following is the best justification for this claim? A) At 20°C, the average speed of NH3 molecules is greater than that of CO, molecules because NH, molecules have less mass than Co, molecules have. (B) Co, is a nonpolar molecule that has no significant intermolecular forces, whereas NH, has strong London dispersion intermolecular forces Both CO, and NH, are nonpolar molecules that have only London dispersion intermolecular forces, but the larger electron cloud of CO, molecules causes it to have stronger intermolecular forces CO, is a nonpolar molecule that has London dispersion intermolecular forces that are weaker than the dipole-dipole and London dispersion forces between the polar NH, molecules

Answer 1

wer Answer: cą -is non polar becaus of its linear Structure o=c=0... It has only London dispersion forces Nithy - is polar : WHz is polar molecule It losas strong dipole-deptle and London dispersion forces. so It lequities at lower pressures than for co