Question

cho 500ml đ CH3COOH 1M td vừa đủ vs dd NaOH

A. TÍNH KL dd CH3COOH THAM GIA P/UNG

B. TÍNH KL SP TẠO THÀNH 

C. NẾU TOÀN BỘ DD CH3COOH TRÊN VÀO 200ML Đ NA2CO3 0,5M THÌ THU ĐC BN LÍT CO2 THOÁT RA

Answer 1

\(n_{CH_3COOH}=0.5\cdot1=0.5\left(mol\right)\)

\(CH_3COOH+NaOH\rightarrow CH_3COONa+H_2O\)

\(0.5...........................................0.5\)

\(m_{CH_3COOH}=0.5\cdot60=30\left(g\right)\)

\(m_{CH_3COONa}=0.5\cdot82=41\left(g\right)\)

\(n_{Na_2CO_3}=0.2\cdot0.5=0.1\left(mol\right)\)

\(2CH_3COOH+Na_2CO_3\rightarrow2CH_3COONa+CO_2+H_2O\)

\(0.2.........................0.1\)

\(\Rightarrow CH_3COOHdư\)

\(n_{CO_2}=n_{Na_2CO_3}=0.1\left(mol\right)\)

\(V_{CO_2}=0.1\cdot22.4=2.24\left(l\right)\)