Hỗn hợp khí X gồm SO2 và O2 có tỉ khối so với metan bằng 3 . Đun nóng X một thời gian trong bình kín ( có bột V2O5 làm xúc tác) , thu được hh khí Y có tỉ khối só với metan bằng 3,75.Hiệu suất của phản ứng tổng hợp SO3 là : A.50% B.80 C.40 D.25

2 câu trả lời

SO2 (x mol ) 64 16

48

O2 ( y mol) 32 16

x=y

Chọn mol SO2 va O2 đều bằng 1

\( SO_2 + 1/2O_2 \to SO_3\)

bd 1 1

Pu 1/2 x x x

Sau 1-1/2x 1-x x

n sau = 2-1/2x

\( n_{sau}= \dfrac{{m_{bd}}}{{\overline M}}= 1,6\)

=> 2-1/2x=1,6=> x=0,8

H = 0,8/1 .100% = 80%

Mình giải bên dưới nhé!

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