\(m_{AgNO3}=200.17\%=34\left(g\right)\)
\(\Rightarrow n_{AgNO3}=\frac{35}{170}=0,2\left(mol\right)\)
\(m_{NaCl}=300.2,925\%=8,775\left(g\right)\)
\(\Rightarrow n_{NaCl}=\frac{8,775}{58,5}=0,15\left(mol\right)\)
\(AgNO_3+NaCl\rightarrow AgCl+NaNO_3\)
0,15_______0,15______0,15______0,15
Sau phản ứng AgNO3 hết ( tính theo NaCl)
\(n_{AgCl}=n_{NaCl}=0,15\left(mol\right)\)
\(\Rightarrow m_{AgCl}=0,15.143,5=21,525\left(g\right)\)
\(m_{dd\left(spu\right)}=m_{NaCl}+m_{AgNO3}-n_{AgCl}\)
\(=34+8,775-21,525=21,25\left(g\right)\)
\(n_{AgNO3\left(dư\right)}=0,2-0,15=0,05\left(mol\right)\)
\(m_{AgNO3\left(dư\right)}=0,05.170=8,5\left(g\right)\)
\(C\%_{AgNO3\left(dư\right)}=\frac{8,5}{21,25}.100\%=40\%\)
\(m_{NaNO3}=0,15.85=12,75\left(g\right)\)
\(\Rightarrow C\%_{NaNO3}=\frac{12,75}{21,25}.100\%=60\%\)
