Bài 4: Tính thể tích của ở đktc
a) 2,45 mol N2
b) 3,2 mol O2
c) 1,45 mol CO2
d) 0,15 mol CO2
e) 0,2 mol NO2
f) 0,02 mol SO2
Bài 5: Tính thể tích khí ở đktc của:
a) 0,5 mol H2
b) 0,8 mol O2
c) 2 mol CO2
d) 3 mol CH4
e) 0,9 mol N2
f)1,5 mol H2
4.
a. `V_{N_2(đktc)}=22,4.n=22,4.2,45=54,88(l)`
b. `V_{O_2(đktc)}=22,4.n=22,4.3,2=71,68(l)`
c. `V_{CO_2(đktc)}=22,4.n=22,4.1,45=32,48(l)`
d. `V_{CO_2(đktc)}=22,4.n=22,4.0,15=3,36(l)`
e. `V_{NO_2(đktc)}=22,4.n=22,4.0,2=4,48(l)`
f. `V_{SO_2(đktc)}=22,4.n=22,4.0,02=0,448(l)`
5.
a. `V_{H_2(đktc)}=22,4.n=22,4.0,5=11,2(l)`
b. `V_{O_2(đktc)}=22,4.n=22,4.0,8=17,92(l)`
c. `V_{CO_2(đktc)}=22,4.n=22,4.2=44,8(l)`
d. `V_{CH_4(đktc)}=22,4.n=22,4.3=67,2(l)`
e. `V_{N_2(đktc)}=22,4.n=22,4.0,9=20,16(l)`
f. `V_{H_2(đktc)}=22,4.n=22,4.1,5=33,6(l)`
Bài 1/
a/ $n_{N_2}=\dfrac{m_{N_2}}{M_{N_2}}=\dfrac{2,45}{28}=0,0875(mol)$
b/ $n_{O_2}=\dfrac{m_{O_2}}{M_{O_2}}=\dfrac{3,2}{32}=0,1(mol)$
c/ $n_{CO_2}=\dfrac{m_{CO_2}}{M_{CO_2}}=\dfrac{1,45}{44}=0,3(mol)$
d/ $n_{CO_2}=\dfrac{m_{CO_2}}{M_{CO_2}}=\dfrac{0,15}{44}=0,003(mol)$
e/ $n_{NO_2}=\dfrac{m_{NO_2}}{M_{NO_2}}=\dfrac{0,2}{46}=0,004(mol)$
f/ $n_{SO_2}=\dfrac{m_{SO_2}}{M_{SO_2}}=\dfrac{0,02}{64}=0,0003125(mol)$
Bài 2/
a/ $V_{H_2}=22,4.n_{H_2}=22,4.0,5=11,2(l)$
b/ $V_{O_2}=22,4.n_{O_2}=22,4.0,8=17,92(l)$
c/ $V_{CO_2}=22,4.n_{CO_2}=22,4.2=44,8(l)$
d/ $V_{CH_4}=22,4.n_{CH_4}=22,4.3=67,2(l)$
e/ $V_{N_2}=22,4.n_{N_2}=22,4.0,9=20,16(l)$
f/ $V_{H_2}=22,4.n_{H_2}=22,4.1,5=33,6(l)$