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\(n_{CaO}=\dfrac{1000}{56}=\dfrac{125}{7}\left(mol\right)\\ PTHH:CaCO_3\underrightarrow{to}CaO+CO_2\\ n_{CaCO_3\left(TT\right)}=\dfrac{125}{7}:85\%=\dfrac{2500}{119}\left(mol\right)\\ m_{CaCO_3}=\dfrac{2500}{119}.100\approx2100,84\left(g\right)\)
\(PTHH:CaCO_3\xrightarrow{t^o}CO_2+CaO\\ BTKL:m_{CaCO_3}=m_{CO_2}+m_{CaO}=22,4+17,6=40(g)\\ \Rightarrow m_{CaCO_3(tt)}=\dfrac{40}{85\%}=47,06(g)\\ \Rightarrow m_{\text{đá vôi}}=\dfrac{47,06}{80\%}=58,825(g)\)
1)
1,2 tấn = 1200(kg)
5 tạ = 500(kg)
mCaCO3=1200.80%=960(kg)mCaCO3=1200.80%=960(kg)
CaCO3to→CaO+CO2nCaCO3 pư=nCaO=50056(mol)⇒H=50056.100960.100%=93%
\(m_{\text{CaCO_3}}=1000.95\%=950kg\\ \rightarrow n_{\text{CaCO_3}}=9,5mol\)
\(m_{CaCO_3}\underrightarrow{t^o}CaO+CO_2\)
9,5 → 9,5
\(\rightarrow V_{CO_2}=9,5.22,4=212,8\)
→ hiệu suất phản ứng là
\(\dfrac{159,6}{212,8}.100=75\%\)
\(m_{CaCO_3}=90\%\cdot1000=900\left(kg\right)\)
\(n_{CaCO_3}=\dfrac{900}{100}=9\left(kmol\right)\)
\(CaCO_3\underrightarrow{^{^{t^0}}}CaO+CO_2\)
\(9...............9\)
\(m_{CaO}=9\cdot56=504\left(kg\right)=0.504\left(tấn\right)\)
\(H\%=\dfrac{0.45}{0.504}\cdot100\%=89.28\%\)
1)
$2C + O_2 \xrightarrow{t^o} 2CO$
$m_{C\ pư} = 490 - 49 = 441(kg)$
$H = \dfrac{441}{490}.100\% = 90\%$
2)
$m_{CaCO_3} = 1000.90\% = 900(kg)$
$CaCO_3 \xrightarrow{t^o} CaO + CO_2$
$n_{CaCO_3\ pư} = n_{CaO} = \dfrac{0,45}{56} = 0,008(kmol)$
$H = \dfrac{0,008.100}{900}.100\% = 0,09\%$
$m_{CaCO_3} = 2500.80\% = 2000(gam)$
$n_{CaCO_3} = \dfrac{2000}{100}= 20(mol)$
$CaCO_3 \xrightarrow{t^o} CaO + CO_2$
$n_{CaO} = n_{CaCO_3\ pư} = 20.85\% = 17(mol)$
$m_{CaO} = 17.56 = 952(gam)$
\(n_{CaCO_3}=\dfrac{2500.80\%}{100}=20\left(mol\right)\\ PTHH:CaCO_3\underrightarrow{to}CaO+H_2O\\ 20...........20.......20\left(mol\right)\\ n_{CaO\left(TT\right)}=20.85\%=17\left(mol\right)\\ \rightarrow m_{CaO\left(TT\right)}=56.17=952\left(g\right)\)
\(m_{CaCO_3}=m_{CaO}+m_{CO_2}=250\left(kg\right)\\ \%m_{\dfrac{CaCO_3}{\text{đ}\text{á}.v\text{ô}i}}=\dfrac{250}{280}.100\approx89,3\%\)
$CaCO_3 \xrightarrow{t^o} CaO +C O_2$
$n_{CaCO_3\ pư} = n_{CaO} = \dfrac{2000}{56}(kmol)$
$n_{CaCO_3\ đã\ dùng} = \dfrac{2000}{56} : 85\% = \dfrac{5000}{119}(kmol)$
$m_{CaCO_3} = \dfrac{5000}{119}.100 = 4201,68(kg)$