PTHH :
\(Na_2CO_3+2HCl\rightarrow2NaCl+H_2O+CO_2\uparrow\)
x 2x 2x x x
\(K_2CO_3+2HCl\rightarrow2KCl+H_2O+CO_2\uparrow\)
y 2y 2y y y
Ta có :
106x + 138y = 26
2x + 2y = 0,4
Giải hệ PT, ta có :
\(\rightarrow x=0,05\left(mol\right);y=0,15\left(mol\right)\)
Thu đc khí CO2 chứ bạn nhỉ?
\(a,V_{CO_2}=\left(0,05+0,15\right).22,4=4,48\left(l\right)\)
\(b,m_{muối}=0,05.58,5+0,15.74,5=14,1\left(g\right)\)
\(c,\%m_{Na_2CO_3}=\dfrac{0,05.106}{26}.100\%\approx20,38\%\)
\(\%m_{K_2CO_3}=100\%-20,38\%=79,62\%\)