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# What is the ratio of the average speed of SO2 molecules to that of oxygen molecules at 298 K? A. √64:√32 B.2:1 C.1:2 D. √32:√64 E.1:1?

What is the ratio of the average speed of SO2 molecules to that of oxygen molecules at 298 K?

A. square root of 64 : square root of 32

B.2:1

C.1:2

D. square root of 32 : square root of 64

E.1:1

### 1 Answer

Relevance

- pisgahchemistLv 73 weeks ago
Speeds of molecules

u = √(3RT/M)

u(SO2) ... √(3RT/64.1) ... 0.125

---------- = ----------------- = ---------- = 0.707

u(O2) ...... √(3RT/32.0) ... 0.177

32^1/2 / 64^1/2 = 0.707

The answer is "D"

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