hóa học 8

L

lynkkulee

L

lp_qt

a.$Zn+2HCl \rightarrow ZnCl_2+H_2$

$2Al+6HCl\rightarrow 2AlCl_3+3H_2$

b. theo pt

$n_{H_2}=n_{Zn}+\dfrac{3}{2}n_{Al}=0.085$ \Rightarrow $V_{H_2}=1.904$

c. $n_{HCl}=2.n_{H_2}=0.17$

rồi tính như bình thường
 
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