Okay confirm với em đăng đề là a) Tính a và b) Xđ C% các chất trong X
\(m_{ddHCl}=200.1,2=240\left(g\right)\\ m_{HCl}=240.3,65\%=8,76\left(g\right)\\ \Rightarrow n_{HCl}=\dfrac{8,76}{36,5}=0,24\left(mol\right)\\ n_{AgNO_3}=\dfrac{200.3,4\%}{170}=0,04\left(mol\right)\\ PTHH:HCl+AgNO_3\rightarrow AgCl\downarrow+HNO_3\\ Vì:\dfrac{0,04}{1}< \dfrac{0,06}{1}\Rightarrow HCldư\\ \Rightarrow n_{AgCl}=n_{HNO_3}=n_{HCl\left(p.ứ\right)}=n_{AgNO_3}=0,4\left(mol\right)\\ \Rightarrow a=m_{\downarrow}=m_{AgCl}=143,5.0,04=5,74\left(g\right)\\ X:HCl\left(dư\right),HNO_3\\ n_{HCl\left(dư\right)}=0,24-0,04=0,2\left(mol\right)\\ m_{ddX}=m_{ddHCl}+m_{ddAgNO_3}-m_{AgCl}=240+200-5,74=434,26\left(g\right)\)
\(C\%_{ddHCl\left(dư\right)}=\dfrac{36,5.0,2}{434,26}.100\approx1,681\%\\ C\%_{ddHNO_3}=\dfrac{0,04.63}{434,26}.100\approx0,58\%\)
