\(n_{Zn}=\dfrac{13}{65}=0,2(mol)\\ a,Zn+2HCl\to ZnCl_2+H_2\\ \Rightarrow n_{H_2}=0,2(mol);n_{HCl}=0,4(mol)\\ b,m_{HCl}=0,4.36,5=14,6(g)\\ c,V_{H_2}=0,2.24,79=4,958(l)\)

a) \(PTHH:Mg+2HCL\) → \(MgCl_2+H_2\)

b) Theo định luật bảo toàn khối lượng

⇒ \(m_{Mg}+m_{HCl}=m_{MgCl_2}+m_{H_2}\)

c) ⇒ \(4,8+200=m_{MgCl_2}+0,4\)

⇒ \(m_{MgCl_2}=204,4\left(g\right)\)

a, PTHH : \(Mg+2HCl -> MgCl_2+H_2\)

b/ Công thức ĐLBTLKL: \(m_{Mg}+m_{HCl}=m_{MgCl_2}+m_{H_2}\)

c/ Áp dụng ĐLBTKL, ta có: \(m_{Mg}+m_{HCl}=m_{MgCl_2}+m_{H_2}\)

\(=> m_{MgCl_2}=(9,6+300)-0,8=308,8(g)\)

Vậy khối lượng \(MgCl_2\)  thu được là \(308,8 g \)

a) PTHH: Mg + 2HCl -> MgCl₂ + H₂

b) Theo ĐLBTKL

\(m_{Mg}+m_{HCl}=m_{MgCl_2}+m_{H_2}\\ =>9,6+300=m_{MgCl_2}+0,8\)

c) Khối lượng MgCl₂ thu dc là

\(m_{MgCl_2}=309,6-0,8=308,8\left(g\right)\)

\(n_{HCl}=\dfrac{7,3}{36,5}=0,2\left(mol\right)\)

PTHH: Zn + 2HCl --> ZnCl₂ + H₂

          0,1<---0,2------>0,1--->0,1

=> m_Zn = 0,1.65 = 6,5(g)

=> V_H2 = 0,1.22,4 = 2,24(l)

=> m_ZnCl2 = 0,1.136 = 13,6(g)

\(n_{HCl}=\dfrac{7.3}{36.5}=0.2\left(mol\right)\)

\(Zn+2HCl\rightarrow ZnCl_2+H_2\)

\(0.1........0.2........0.1..........0.1\)

\(m_{Zn}=0.1\cdot65=6.5\left(g\right)\)

\(m_{ZnCl_2}=0.1\cdot136=13.6\left(g\right)\)

\(V_{H_2}=0.1\cdot22.4=2.24\left(l\right)\)

Zn + 2HCl \(\rightarrow\) ZnCl₂ + H₂

\(n_{HCl}=\dfrac{7,3}{36,5}=0,2mol\)

\(\Rightarrow n_{Zn}=\dfrac{0,2}{2}=0,1mol\\ m_{Zn}=0,1.65=6,5g\)

\(\Rightarrow n_{H_2}=\dfrac{0,2}{2}=0,1mol\\ V_{H_2}=0,1.22,4=2,24l\)

\(\Rightarrow n_{ZnCl_2}=\dfrac{0,2}{2}=0,1mol\\ m_{ZnCl_2}=0,1.\left(65+35,5.2\right)=13,6g\)

Fe+3Cl\(\underrightarrow{t^o}\)FeCl3

mFe+mCl=mFeCl3

BTKL: mFe+mCl=mFeCl3

          11,2  +21,3=mFeCl3

=>mFeCl3=32,5(gam)

VCl(đkt)=24.0,9=21,6 lít

a) Nhôm + Axit clohidric --> Nhôm clorua + Khí hidro

b) 2Al + 6HCl --> 2AlCl₃ + 3H₂

c) Theo ĐLBTKL: m_Al + m_HCl = m_AlCl3 + m_H2

=> m_HCl = 26,7 + 0,6 - 5,4 = 21,9(g)

\(n_{HCl}=0,5.0,2=0,1\left(mol\right)\)

Pt : \(Fe+2HCl\rightarrow FeCl_2+H_2\)

      0,05<--0,1----->0,05--->0,05

\(m_{Fe}=0,05.56=2,8\left(g\right)\)

\(m_{FeCl2}=0,05.127=6,35\left(g\right)\)

\(V_{H2\left(dktc\right)}=0,05.22,4=1,12\left(l\right)\)

\(V_{H2\left(dkc\right)}=0,05.24,79=1,2395\left(l\right)\)

$PTHH:Zn+2HCl\to ZnCl_2+H_2\uparrow$

\(n_{Mg}=\dfrac{9,6}{24}=0,4\left(mol\right)\\ a,PTHH:Mg+2HCl\rightarrow MgCl_2+H_2\\ b,n_{MgCl_2}=n_{H_2}=n_{Mg}=0,4\left(mol\right)\\ m_{MgCl_2}=95.0,4=38\left(g\right)\\ b,V_{H_2\left(đkc\right)}=0,4.24,79=9,916\left(l\right)\\ d,n_{HCl}=0,4.2=0,8\left(mol\right)\\ V_{ddHCl}=\dfrac{0,8}{2}=0,4\left(l\right)\)