70 gms of a metal oxide on reduction produced 54 gms of metal. The atomic weight of the metal is 81. What is its valency?

70 gms of a metal oxide on reduction produced 54 gms of metal. The ato

1.	70 gms of a metal oxide on reduction produced 54 gms of metal. The atomic weight of the metal is 81. What is its valency?
Answer» <html><body><p><br/></p>Solution :wt. of metal oxide = 70 <a href="https://interviewquestions.tuteehub.com/tag/g-1003017" style="font-weight:bold;" target="_blank" title="Click to know more about G">G</a> <br/> wt. of metal = 54 g <br/> `therefore` wt of oxygen = `70-54=16g` <br/> `(W_(<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a>))/(W_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>))=(E_(1))/(E_(2)),("wt of metal")/("wt of oxygen")=("EQ wt of metal")/("EQ wt of oxygen")` <br/> `(54)/(16)=(E)/(8)impliesE=27` <br/> At. Wt = EQ wt `xx` valency <br/> `81=27xx` valency implies Valency = 3</body></html>