Question

[Lê Nguyệt]

nguoi ta sx H₂SO₄ tu quang pryit. neu dung 100 tan quang pyric co 20% tap chat thi sx duoc bao nhieu tan dung dich H₂SO₄ 98%. biet hieu suat cua toan bo qua trinh la 80%.

Answer 1

[Hung nguyen]

Khối lượng \(FeS_2\) có trong 100 tấn quặng pyrit là:

\(m_{FeS_2}=100.10^6.80\%=80.10^6\left(g\right)\)

Khối lượng của \(FeS_2\) tham gia phản ứng là:

\(m_{FeS_2\left(pứ\right)}=80.10^6.0,8=64.10^6\left(g\right)\)

\(n_{FeS_2\left(pứ\right)}=\dfrac{64.10^6}{120}=\dfrac{8.10^6}{15}\left(mol\right)\)

\(FeS_2\left(\dfrac{8.10^6}{15}\right)\rightarrow2SO_2\rightarrow2SO_3\rightarrow2H_2SO_4\left(\dfrac{16.10^6}{15}\right)\)

\(\Rightarrow m_{H_2SO_4}=\dfrac{16.10^6}{15}.98=\dfrac{1568.10^6}{15}\left(g\right)\)

\(\Rightarrow m_{ddH_2SO_4}=\dfrac{1568.10^6}{15.98\%}=\dfrac{320.10^6}{3}\left(g\right)=\dfrac{320}{3}\left(tan\right)\)