Asked by abhijit
1 g alloy of Cu and Zn reacted with excess of H2SO4 gives 60 ml of H2 at STP. What is the % of Zn in the alloy?
Answers
Answered by
drwls
60 ml of H2 at STP is .060/22.4 = 0.0268 moles of H2 formed.
Zn will release H2 in sulfuric acid, but Cu will not.
If you have x grams of Zn and 1-x grams of Cu (total = 1.0 g), the Zn reaction will result in x/65.4 moles of H2.
x/65.4 = 0.00268 moles
x = 0.175
The alloy is 17.5% zinc
Zn will release H2 in sulfuric acid, but Cu will not.
If you have x grams of Zn and 1-x grams of Cu (total = 1.0 g), the Zn reaction will result in x/65.4 moles of H2.
x/65.4 = 0.00268 moles
x = 0.175
The alloy is 17.5% zinc
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.