\(n_S=\dfrac{32}{32}=1\left(mol\right)\)

\(n_{O_2}=\dfrac{11.2}{22.4}=0.5\left(mol\right)\)

\(S+O_2\underrightarrow{^{t^0}}SO_2\)

\(1.....1\)

\(1......0.5\)

\(LTL:\dfrac{1}{1}>\dfrac{0.5}{1}\Rightarrow Sdư\)

\(V_{SO_2}=0.5\cdot22.4=11.2\left(l\right)\)

\(n_S=\dfrac{3.2}{32}=0.1\left(mol\right)\)

\(n_{O_2}=\dfrac{1.12}{22.4}=0.05\left(mol\right)\)

\(S+O_2\underrightarrow{t^0}SO_2\)

\(0.05.0.05...0.05\)

\(\Rightarrow Sdư\)

\(V_{SO_2}=0.05\cdot22.4=1.12\left(l\right)\)

\(b.\)

\(S+O_2\underrightarrow{t^0}SO_2\)

\(0.1..0.1\)

\(V_{kk}=5V_{O_2}=5\cdot0.1\cdot22.4=11.2\left(l\right)\)

Tks bạn

a, PT: \(S+O_2\underrightarrow{t^o}SO_2\)

Ta có: \(n_S=\dfrac{3,2}{32}=0,1\left(mol\right)\)

\(n_{O_2}=\dfrac{1,12}{22,4}=0,05\left(mol\right)\)

Xét tỉ lệ: \(\dfrac{0,1}{1}>\dfrac{0,05}{1}\), ta được S dư.

Theo PT: \(n_{SO_2}=n_{O_2}=0,05\left(mol\right)\) \(\Rightarrow V_{SO_2}=0,05.22,4=1,12\left(l\right)\)

b, Theo PT: \(n_{O_2}=n_S=0,1\left(mol\right)\)

\(\Rightarrow V_{O_2}=0,1.22,4=2,24\left(l\right)\)

\(\Rightarrow V_{kk}=2,24.5=11,2\left(l\right)\)

nS = 1,92/32 = 0,06 (mol)

PTHH: S + O2 -> (t°) SO2

Mol: 0,06 ---> 0,06 ---> 0,06

VSO2 (LT) = 0,06 . 22,4 = 1,344 (l)

VSO2 (TT) = 1,344 . 90% = 1,2096 (l)

nS= 0.06 mol

S + O2 -to-> SO2

Từ PTHH:

nSO2= 0.06 mol

VSO2= 1.344l

VSO2 thực = 1.344*90/100=1.2096l

Định luật bảo toàn khối lượng : 

\(m_S+m_{O2}=m_{SO2}\)

3,2 + \(m_{O2}\) = 6,4

⇒ \(m_{O2}=6,4-3,2=3,2\left(g\right)\)

 Chúc bạn học tốt

\(BTKL: \\ m_S+m_{O_2}=m_{SO_2}\\ 3,2+m_{O_2}=6,4\\ m_{O_2}=6,4-3,2=3,1(g)\)

a) \(n_S=\dfrac{16}{32}=0,5\left(mol\right)\)

PTHH: S + O₂ --t^o--> SO₂

          0,5->0,5------>0,5

=> m_SO2 = 0,5.64 = 32 (g)

b) V_O2 = 0,5.22,4 = 11,2 (l)

=> V_kk = 11,2.5 = 56 (l)

c) 

\(n_{O_2}=\dfrac{24}{32}=0,75\left(mol\right)\)

Xét tỉ lệ: \(\dfrac{0,5}{1}< \dfrac{0,75}{1}\)

=> S hết, O₂ dư

PTHH: S + O₂ --t^o--> SO₂

          0,5->0,5------>0,5

=> n_O2(dư) = 0,75 - 0,5 = 0,25 (mol)

bn check lại giúp mình ý b) nhé

Đáp án D
S   +   O 2   →   S O 2     0 , 05             0 , 05   m o l     n S   =   1 , 6 / 32   =   0 , 05   m o l     V S O 2   =   0 , 05 . 22 , 4   =   1 , 12   l

\(n_S=\dfrac{m_S}{M_S}=\dfrac{3,2}{32}=0,1mol\)

\(n_{O_2}=\dfrac{V_{O_2}}{22,4}=\dfrac{1,68}{22,4}=0,075mol\)

\(S+O_2\rightarrow\left(t^o\right)SO_2\)

0,1> 0,075                     ( mol )

         0,075    0,075         ( mol )

\(V_{SO_2}=V_{O_2}=1,68l\)

Cảm ơn bạn nhé:)

\(n_{SO_2}=\dfrac{2.24}{22.4}=0.1\left(mol\right)\)

\(S+O_2\underrightarrow{^{t^0}}SO_2\)

\(n_S=0.1\left(mol\right)\)

\(m_S=0.1\cdot32=3.2\left(g\right)\)

=> A 

PTHH : S + O2 -> SO2

nSO2 = V/22,4= 0,1 mol

Theo PTHH : nS = nSO2 = 0,1 mol

=> mS = n.M = 3,2 g