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PTHH: \(2KClO_3\xrightarrow[MnO_2]{t^o}2KCl+3O_2\uparrow\)
\(S+O_2\xrightarrow[]{t^o}SO_2\)
Ta có: \(n_{KClO_3}=\dfrac{18,375}{122,5}=0,15\left(mol\right)\) \(\Rightarrow n_{O_2\left(lý.thuyết\right)}=0,225\left(mol\right)\)
\(\Rightarrow n_{O_2\left(thực\right)}=0,225\cdot85\%=0,19125\left(mol\right)=n_S=n_{SO_2}\)
\(\Rightarrow\left\{{}\begin{matrix}V_{O_2}=0,19125\cdot22,4=4,284\left(l\right)=V_{SO_2}\\m_S=0,19125\cdot32=6,12\left(g\right)\\\end{matrix}\right.\)
nO2=0,3mol
pthh: S+O2=>SO2
0,3<-0,3->0,3
=> m=0,3.32=9,6g
V=0,3.22,4=6,72l
S+O2->SO2
nSO2=0.4(mol)
Theo pthh nS=nO2=nSO2->nS=nO2=nSO2=0.4(mol)
m1=0.4*32=12.8(g)
m2=0.4*32=12.8(g)
\(n_{O2}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\)
Pt : \(S+O_2\underrightarrow{t^o}SO_2|\)
1 1 1
0,15 0,15 0,15
a) \(n_S=\dfrac{0,15.1}{1}=0,15\left(mol\right)\)
⇒ \(m_S=0,15.32=4,8\left(g\right)\)
b) \(n_{SO2}=\dfrac{0,15.1}{1}=0,15\left(mol\right)\)
\(V_{SO2\left(dktc\right)}=0,15.22,4=3,36\left(l\right)\)
Chúc bạn học tốt
\(n_S=\dfrac{3.2}{32}=0.1\left(mol\right)\)
\(n_{O_2}=\dfrac{1.12}{22.4}=0.05\left(mol\right)\)
\(S+O_2\underrightarrow{t^0}SO_2\)
\(0.05.0.05...0.05\)
\(\Rightarrow Sdư\)
\(V_{SO_2}=0.05\cdot22.4=1.12\left(l\right)\)
\(b.\)
\(S+O_2\underrightarrow{t^0}SO_2\)
\(0.1..0.1\)
\(V_{kk}=5V_{O_2}=5\cdot0.1\cdot22.4=11.2\left(l\right)\)
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: \(n_{O_2}=n_S=0,1\left(mol\right)\)
\(\Rightarrow V_{O_2}=0,1.22,4=2,24\left(l\right)\)
\(\Rightarrow V_{kk}=2,24.5=11,2\left(l\right)\)
\(n_{SO_2}=\dfrac{2.24}{22.4}=0.1\left(mol\right)\)
\(S+O_2\underrightarrow{^{t^0}}SO_2\)
\(n_S=0.1\left(mol\right)\)
\(m_S=0.1\cdot32=3.2\left(g\right)\)
=> 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
S + O2 →SO2
a) nO2 = 2,24/22,4 = 0,1 mol
=> nSO2 = 0,1 mol
<=> V SO2 = 0,1 .22,4 = 2,24 lít
b) nS = O2 = 0,1 mol
=> mS = 0,1.32 = 3,2 gam
S + O2 →SO2
a) nO2 = 2,24/22,4 = 0,1 mol
=> nSO2 = 0,1 mol
<=> V SO2 = 0,1 .22,4 = 2,24 lít
b) nS = O2 = 0,1 mol
=> mS = 0,1.32 = 3,2 gam
nS=0.5(mol)
S+O2->SO2
Theo pthh nS=nO2=nSO2->nS=nO2=nSO2=0.5(mol)
->V1=V2=11.2(l)