(1)设CaCO3质量为x
Na2CO3+CaCl2=2NaCl+CaCO3↓
106 100
x 10g
106/x=100/10g
x=10.6g
(2)设NaCl质量为y
2NaCl—CaCO3
117 100
y 10g
117/y=100/10g
y=11.7g
w(NaCl)=(11.7g+11g-10.6g)/(11g+100g+141g-10g)=5%
(1)设CaCO3质量为x
Na2CO3+CaCl2=2NaCl+CaCO3↓
106 100
x 10g
106/x=100/10g
x=10.6g
(2)设NaCl质量为y
2NaCl—CaCO3
117 100
y 10g
117/y=100/10g
y=11.7g
w(NaCl)=(11.7g+11g-10.6g)/(11g+100g+141g-10g)=5%