Phần trắc nghiệm
Trà lời đúng mỗi câu được 1 điểm
Câu 1.A Câu 2. C Câu 3. B
Câu 4. B Câu 5. B Câu 6. B
Phần tự luận
Các PTHH:
\(\eqalign{
& Fe + 2HCl \to FeC{l_2} + {H_2} \cr
& \frac{a}{{56}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\text{ }}\,\,\,\,\frac{a}{{56}}.22,4 \cr
& Zn + 2HCl \to ZnC{l_2} + {\text{ }}{H_2} \cr
& \frac{a}{{65}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\text{ }}\,\,\,\,\frac{a}{{65}}.22,4 \cr
& 2{\text{ }}Al + 6{\text{ }}HCl \to 2{\text{ }}AlC{l_3} + {\text{ }}3{H_2} \cr
& \frac{a}{{27}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\text{ }}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\frac{{3a}}{{2.27}}.22,4 \cr
& Mg + 2HCl \to MgC{l_2} + {H_2} \cr
& \frac{a}{{24}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\text{ }}\,\,\,\,\,\,\,\,\,\frac{a}{{24}}.22,4 \cr}\)
Từ đó ta suy ra Al cho thể tích hiđro lớn nhất.