<p class="MsoNormal"><span>Nhận biết các chất rắn như bảng dưới đây:</span></p><table border="1" cellpadding="0" cellspacing="0" class="MsoTableGrid" style="border-collapse: collapse; border: none; mso-border-alt: solid windowtext .5pt; mso-yfti-tbllook: 1184; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt;"><tbody><tr style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; height: 1.0cm;"><td style="width: 90.45pt; border: solid windowtext 1.0pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="121"><p align="center" class="MsoNormal"></p></td><td style="width: 113.25pt; border: solid windowtext 1.0pt; border-left: none; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="151"><p align="center" class="MsoNormal"><span>NaCl</span></p></td><td style="width: 120.65pt; border: solid windowtext 1.0pt; border-left: none; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="161"><p align="center" class="MsoNormal"><span>K<sub>2</sub>SO<sub>4</sub></span></p></td><td style="width: 92.15pt; border: solid windowtext 1.0pt; border-left: none; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="123"><p align="center" class="MsoNormal"><span>BaCO<sub>3</sub></span></p></td><td style="width: 92.9pt; border: solid windowtext 1.0pt; border-left: none; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="124"><p align="center" class="MsoNormal"><span>Na<sub>2</sub>CO<sub>3</sub></span></p></td></tr><tr style="mso-yfti-irow: 1; height: 1.0cm;"><td style="width: 90.45pt; border: solid windowtext 1.0pt; border-top: none; mso-border-top-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="121"><p align="center" class="MsoNormal"><span>Dung dịch H2SO4 loãng</span></p></td><td style="width: 113.25pt; border-top: none; border-left: none; border-bottom: solid windowtext 1.0pt; border-right: solid windowtext 1.0pt; mso-border-top-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="151"><p align="center" class="MsoNormal"><span>Không hiện tượng</span></p></td><td style="width: 120.65pt; border-top: none; border-left: none; border-bottom: solid windowtext 1.0pt; border-right: solid windowtext 1.0pt; mso-border-top-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="161"><p align="center" class="MsoNormal"><span>Không hiện tượng</span></p></td><td style="width: 92.15pt; border-top: none; border-left: none; border-bottom: solid windowtext 1.0pt; border-right: solid windowtext 1.0pt; mso-border-top-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="123"><p align="center" class="MsoNormal"><span>Kết tủa trắng, khí thoát ra</span></p></td><td style="width: 92.9pt; border-top: none; border-left: none; border-bottom: solid windowtext 1.0pt; border-right: solid windowtext 1.0pt; mso-border-top-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="124"><p align="center" class="MsoNormal"><span>Khí thoát ra</span></p></td></tr><tr style="mso-yfti-irow: 2; mso-yfti-lastrow: yes; height: 1.0cm;"><td style="width: 90.45pt; border: solid windowtext 1.0pt; border-top: none; mso-border-top-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="121"><p align="center" class="MsoNormal"><span>Ba(OH)2</span></p></td><td style="width: 113.25pt; border-top: none; border-left: none; border-bottom: solid windowtext 1.0pt; border-right: solid windowtext 1.0pt; mso-border-top-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="151"><p align="center" class="MsoNormal"><span>Không hiện tượng</span></p></td><td style="width: 120.65pt; border-top: none; border-left: none; border-bottom: solid windowtext 1.0pt; border-right: solid windowtext 1.0pt; mso-border-top-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="161"><p align="center" class="MsoNormal"><span>Khí thoát ra</span></p></td><td style="width: 92.15pt; border-top: none; border-left: none; border-bottom: solid windowtext 1.0pt; border-right: solid windowtext 1.0pt; mso-border-top-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="123"><p align="center" class="MsoNormal"></p></td><td style="width: 92.9pt; border-top: none; border-left: none; border-bottom: solid windowtext 1.0pt; border-right: solid windowtext 1.0pt; mso-border-top-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-alt: solid windowtext .5pt; padding: 0cm 5.4pt 0cm 5.4pt; height: 1.0cm;" width="124"><p align="center" class="MsoNormal"></p></td></tr></tbody></table><p class="MsoNormal">Phương trình hóa học xảy ra</p><p class="MsoNormal"><script type="math/tex">{H}_{2}S{O}_{4}+BaC{O}_{3}\to BaS{O}_{4}\downarrow +C{O}_{2}\uparrow +{H}_{2}O</script></p><p class="MsoNormal"></p><p class="MsoNormal"><span>kết tủa trắng </span></p><p class="MsoNormal"><span><span style="mso-spacerun: yes;"><script type="math/tex">{H}_{2}S{O}_{4}+N{a}_{2}C{O}_{3}\to N{a}_{2}S{O}_{4}+C{O}_{2}\uparrow +{H}_{2}O</script></span></span></p><p class="MsoNormal"><span><span style="mso-spacerun: yes;"><script type="math/tex">Ba{\left(OH\right)}_{2}+{K}_{2}S{O}_{4}\to BaS{O}_{4}\downarrow +2KOH</script></span></span></p>

<div><p class="MsoNormal"><span>a) Phương trình hóa học</span></p><span style="mso-bidi-   mso-fareast- mso-fareast-theme-font: minor-latin; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"><span style="mso-spacerun: yes;"><script type="math/tex">4HCl+Mn{O}_{2}\to C{l}_{2}+MnC{l}_{2}+2{H}_{2}O\left(1\right)</script></span></span></div><div><span style="mso-bidi-   mso-fareast- mso-fareast-theme-font: minor-latin; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"><span style="mso-spacerun: yes;">4                          1</span></span></div><div><span style="mso-bidi-   mso-fareast- mso-fareast-theme-font: minor-latin; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"><span style="mso-spacerun: yes;"><script type="math/tex">\text{}\mathrm{0,5}\text{               }\to    \text{}\mathrm{0,125}</script></span></span></div><div><span style="mso-bidi-   mso-fareast- mso-fareast-theme-font: minor-latin; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"><span style="mso-spacerun: yes;"><script type="math/tex">C{l}_{2}+2NaOH\to NaCl+NaClO+{H}_{2}O\left(2\right)</script></span></span></div><div><span style="mso-bidi-   mso-fareast- mso-fareast-theme-font: minor-latin; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"><span style="mso-spacerun: yes;"> 1                        1              1</span></span></div><div><span style="mso-bidi-   mso-fareast- mso-fareast-theme-font: minor-latin; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"><span style="mso-spacerun: yes;"><script type="math/tex">\mathrm{0,125}         \text{}\to      \text{}\mathrm{0,125}\text{   }\mathrm{0,125}</script></span></span></div>

<div><p class="MsoNormal"><span>b) 250ml = 0,25 lít</span></p><p class="MsoNormal"><span>Số mol HCl là: <script type="math/tex">{n}_{HCl}={C}_{{M}_{HCl}}.{n}_{HCl}=\mathrm{2.0,25}=\mathrm{0,5}\left(mol\right)</script></span></p><p class="MsoNormal"><span>Theo phương trình (1), số mol Cl<sub>2</sub> là:</span></p><p class="MsoNormal"><span><span style="mso-spacerun: yes;"><script type="math/tex">{n}_{C{l}_{2}}=\frac{\mathrm{0,5.1}}{4}=\mathrm{0,125}\left(mol\right)</script></span></span></p><p class="MsoNormal"><span>Thể tích khí Cl<sub>2</sub> (đktc) là:</span></p><p class="MsoNormal"><span><span style="mso-spacerun: yes;"><script type="math/tex">{V}_{C{l}_{2}}=\mathrm{22,4.}{n}_{C{l}_{2}}=\mathrm{22,4.0,125}=\mathrm{2,8}\left(lit\right)</script></span></span></p><p class="MsoNormal"><span>Theo phương trình (2), số mol muối NaCl và NaClO là:</span></p><p class="MsoNormal"><span><span style="mso-spacerun: yes;"><script type="math/tex">{n}_{NaCl}={n}_{NaClO}={n}_{C{l}_{2}}=\mathrm{0,125}\left(mol\right)</script></span></span></p><p class="MsoNormal"><span>Khối lượng muối thu được là:</span></p><p class="MsoNormal"><span><span style="mso-spacerun: yes;"><script type="math/tex">{m}_{NaCl}+{m}_{NaClO}=\mathrm{0,125.58,5}+\mathrm{0,125.74,5}=\mathrm{16,625}\left(g\right)</script></span></span></p></div>

Bộ đề kiểm tra định kì học kì 1 Hóa 9 có đáp án (Mới nhất) - Đề 21

Hóa

Phổ thông

Tải đề thi tự luận: Bộ đề kiểm tra định kì học kì 1 Hóa 9 có đáp án (Mới nhất) - Đề 21, hoặc tham gia hoàn thiện 3 lời giải chi tiết cùng gia sư Võ Phúc Đức