Question

Bài 16: Tính số gam, số mol HCl có trong 85,4ml dung dịch HCl 14,6% (D = 1,17 g/ml).

Answer 1

\(m_{ddHCl}=D\cdot V=1,17\cdot85,4=99,918g\)

\(m_{ctHCl}=\dfrac{99,918\cdot14,6\%}{100\%}=14,59g\)

\(n_{HCl}=\dfrac{m_{HCl}}{36,5}=0,4mol\)

Answer 2

\(m_{ddHCl}=\dfrac{85,4}{1,17}=73\left(g\right)\\ m_{HCl}=14,6\%.73=10,658\left(g\right)\\ n_{HCl}=\dfrac{10,658}{36,5}=0,292\left(mol\right)\)