Sửa đề : 0.01 (M)
\(n_{CO_2}=\dfrac{0.2688}{22.4}=0.012\left(mol\right)\)
\(n_{OH^-}=0.2\cdot0.1+0.2\cdot0.01\cdot2=0.024\left(mol\right)\)
\(\dfrac{n_{OH^-}}{n_{CO_2}}=\dfrac{0.024}{0.012}=2\)
=> Phản ứng tạo ra muối trung hòa
\(n_{CO_2}=n_{H_2O}=0.012\left(mol\right)\)
\(\text{Bảo toàn khối lượng : }\)
\(m_{Bazo}+m_{CO_2}=m_M+m_{H_2O}\)
\(\Rightarrow m_M=0.02\cdot40+0.002\cdot74+0.012\cdot44-0.012\cdot18=1.26\left(g\right)\)