How much faster will neon effuse than krypton, given that the molar mass of krypton is

1 answer:

8 0

Effusion is the escape of a gas through a small hole.

Graham Law states that the speed of effusion is inversely related to the square root of its molar mass:

effusion speed = K * 1 / √ molar mass)

=> effusion speed of gas A √(molar mass of gas B)
   --------------------------------- = ----------------------------------
   effusion speed of gas B   √(molar mass of gas A)

=> efussion speed of Ne √(83.8)
   ----------------------------- = ---------- = 2.04
   effusion speed of Kr √(20.18

=> effusion speed of Ne = 2.04 * effusion speed of Kr.

Answer: approximated twice.

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