can you help me????

S

sunflower_nevercry

B

boy_depzai_92

ta có:
[tex]PCl_5 \to PCl_3+Cl_2[/tex]
sau PƯ: a.............x..............x
=>[tex]\frac{208,5a+137x}{a+2x}=29.5=145[/tex]
=>[tex]\frac{x}{a}= \frac{63,5}{152,5}[/tex]
[tex]\anpha =\frac{x}{x+a}[/tex]
kái đó tự đi mà tính nhé
[tex]k_{cb}=\frac{x^2}{a}[/tex]
 
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