Some Basic Concepts Of Chemistry Question 55

Question: What is the empirical formula of vanadium oxide, If 2.74 g of the metal oxide contains 1.53 g of metal?

Options:

A) $ V _2O _3 $

B) $ VO $

C) $ V _2O _5 $

D) $ V _2O _7 $

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Answer:

Correct Answer: C

Solution:

[c] Mass of oxide = Mass of metal + Mass of oxygen $ 2.74=1.53+W _{Oxygen}\Rightarrow W _{Oxygen}=1.21g $ Moles of $ V=\frac{1.53}{51}=0.03 $ Moles of $ O=\frac{1.21}{16}=0.075 $

$ {V _{0.03}},{O _{0.075}} $

$ V{O _{2.5}}\Rightarrow V _2O _5 $



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