A. 7,5.
B. 6,5.
C. 9,5.
D. 12,5.
D
Đáp án D.
\({{\left[ {{\text{C}}_{6}}{{\text{H}}_{7}}{{\text{O}}_{2}}{{(\text{OH})}_{3}} \right]}_{n}}+3n\text{HN}{{\text{O}}_{3}}\to {{\left[ {{\text{C}}_{6}}{{\text{H}}_{7}}{{\text{O}}_{2}}{{\left( \text{ON}{{\text{O}}_{2}} \right)}_{3}} \right]}_{n}}+3n{{\text{H}}_{2}}\text{O}\)
\({{n}_{\text{HN}{{\text{O}}_{3}}(\text{ ban dau })}}=\frac{{{V}_{dd}}.d.C%}{63}=\frac{10.1000.1,4.63%}{63}=140~\,\,\text{mol}\)
\({{n}_{\text{HN}{{\text{O}}_{3}}(\text{ (phan ung) }}}={{n}_{\text{HN}{{\text{O}}_{3}}(\text{ ban dau })}}.H%=126~\,\,\text{mol}\)
\({{n}_{\text{xenlulozo trinitrat }}}=\frac{1}{3n}{{n}_{\text{HN}{{\text{O}}_{3}}(\text{ phan ung })}}=\frac{42}{n}~\,\,\text{mol}\)
\({{m}_{\text{xenlulozo trinitrat }}}=\frac{0,042}{n}\cdot 297n=12474\,\,\text{gam}=12,474\,\,(~\text{kg})\)
Câu hỏi trên thuộc đề trắc nghiệm dưới đây !
Copyright © 2021 HOCTAP247