If 0.060 faraday is passed through an electrolytic cell containing a solution of In3+ ions, the maximum number of moles of In th
at could be deposited at the cathode isA) 0.010 mole
B) 0.020 mole
C) 0.030 mole
D) 0.060 mole
E) 0.18 mole
B) 0.020 mole
C) 0.030 mole
D) 0.060 mole
E) 0.18 mole
1 answer:
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Here is the full question:
Air containing 0.04% carbon dioxide is pumped into a room whose volume is 6000 ft3. The air is pumped in at a rate of 2000 ft3/min, and the circulated air is then pumped out at the same rate. If there is an initial concentration of 0.2% carbon dioxide, determine the subsequent amount in the room at any time.
What is the concentration at 10 minutes? (Round your answer to three decimal places.
Answer:
0.046 %
Explanation:
The rate-in;
= 0.8
The rate-out
=
=
We can say that:
where;
A(0)= 0.2% × 6000
A(0)= 0.002 × 6000
A(0)= 12
Integration of the above linear equation =
so we have:
∴
Since A(0) = 12
Then;
Hence;
∴ the concentration at 10 minutes is ;
= %
= 0.0456667 %
= 0.046% to three decimal places