The rms speed of oxygen molecules (O₂) at a certain temperature T (degree absolute) is v. If the temperature is doubled and oxygen gas dissociates into atomic oxygen, what is its rms speed in atomic form?

• A

  ${\left({\mathrm{v}}_{\mathrm{O}}\right)}_{\mathrm{rms}}=4{\left({\mathrm{v}}_{{\mathrm{O}}_2}\right)}_{\mathrm{rms}}$

• B

  ${\left({\mathrm{v}}_{\mathrm{O}}\right)}_{\mathrm{rms}}={\left({\mathrm{v}}_{{\mathrm{O}}_2}\right)}_{\mathrm{rms}}$

• C

  ${\left({\mathrm{v}}_{\mathrm{O}}\right)}_{\mathrm{rms}}=2{\left({\mathrm{v}}_{{\mathrm{O}}_2}\right)}_{\mathrm{rms}}$

• D

  ${\left({\mathrm{v}}_{\mathrm{O}}\right)}_{\mathrm{rms}}=0.5{\left({\mathrm{v}}_{{\mathrm{O}}_2}\right)}_{\mathrm{rms}}$