cho 6 5 gam kem tac dung vua du voi dung dich hydrochloric acid HCL thi thu duoc dung dich zinc chloride ZnCl2 va khi hydrogen thoat ra A viet PTHH B tinh khoi luong hydrochloric acid HCL tham gia phan ung C tinh khoi luong zinc chloride ZnCl2 tao thanh D tinh the tich khi hydrogen thoat ra o dieu kien chuan 25 do C 1 bar
Cho Zn=65 H=1 Cl= 35.5
\(n_{Zn}=\dfrac{6,5}{65}=0,1mol\)
PTHH: Zn + 2HCl \(\rightarrow\) ZnCl2 + H2
0,1 0,2 0,1 0,1 ( mol )
\(m_{HCl}=0,2.\left(1+35,5\right)=7,3g\)
\(m_{ZnCl_2}=0,1.136=13,6g\)
\(V_{H_2}\left(đkc\right)=0,1.24,79=2,749l\)
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