Cho dãy các kim loại: <span class="MathJax_Preview" style="color: inherit;"><span class="MJXp-math" id="MJXp-Span-1"><span class="MJXp-mstyle" id="MJXp-Span-2"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-3">C</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-4">u</span><span class="MJXp-mo" id="MJXp-Span-5" style="margin-left: 0em; margin-right: 0.222em;">,</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-6">N</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-7">i</span><span class="MJXp-mo" id="MJXp-Span-8" style="margin-left: 0em; margin-right: 0.222em;">,</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-9">Z</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-10">n</span><span class="MJXp-mo" id="MJXp-Span-11" style="margin-left: 0em; margin-right: 0.222em;">,</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-12">M</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-13">g</span><span class="MJXp-mo" id="MJXp-Span-14" style="margin-left: 0em; margin-right: 0.222em;">,</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-15">B</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-16">a</span><span class="MJXp-mo" id="MJXp-Span-17" style="margin-left: 0em; margin-right: 0.222em;">,</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-18">F</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-19">e</span></span></span></span><span id="MathJax-Element-1-Frame" class="mjx-chtml MathJax_CHTML MJXc-processed" tabindex="0" style="font-size: 127%;"><span id="MJXc-Node-1" class="mjx-math"><span id="MJXc-Node-2" class="mjx-mrow"><span id="MJXc-Node-3" class="mjx-mstyle"><span id="MJXc-Node-4" class="mjx-mrow" style="font-size: 144%;"><span id="MJXc-Node-5" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.495em; padding-bottom: 0.298em; padding-right: 0.045em;">C</span></span><span id="MJXc-Node-6" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">u</span></span><span id="MJXc-Node-7" class="mjx-mo"><span class="mjx-char MJXc-TeX-main-R" style="margin-top: -0.145em; padding-bottom: 0.544em;">,</span></span><span id="MJXc-Node-8" class="mjx-mi MJXc-space1"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.445em; padding-bottom: 0.298em; padding-right: 0.085em;">N</span></span><span id="MJXc-Node-9" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.445em; padding-bottom: 0.298em;">i</span></span><span id="MJXc-Node-10" class="mjx-mo"><span class="mjx-char MJXc-TeX-main-R" style="margin-top: -0.145em; padding-bottom: 0.544em;">,</span></span><span id="MJXc-Node-11" class="mjx-mi MJXc-space1"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.445em; padding-bottom: 0.298em; padding-right: 0.04em;">Z</span></span><span id="MJXc-Node-12" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">n</span></span><span id="MJXc-Node-13" class="mjx-mo"><span class="mjx-char MJXc-TeX-main-R" style="margin-top: -0.145em; padding-bottom: 0.544em;">,</span></span><span id="MJXc-Node-14" class="mjx-mi MJXc-space1"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.445em; padding-bottom: 0.298em; padding-right: 0.081em;">M</span></span><span id="MJXc-Node-15" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.495em; padding-right: 0.003em;">g</span></span><span id="MJXc-Node-16" class="mjx-mo"><span class="mjx-char MJXc-TeX-main-R" style="margin-top: -0.145em; padding-bottom: 0.544em;">,</span></span><span id="MJXc-Node-17" class="mjx-mi MJXc-space1"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.445em; padding-bottom: 0.298em;">B</span></span><span id="MJXc-Node-18" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">a</span></span><span id="MJXc-Node-19" class="mjx-mo"><span class="mjx-char MJXc-TeX-main-R" style="margin-top: -0.145em; padding-bottom: 0.544em;">,</span></span><span id="MJXc-Node-20" class="mjx-mi MJXc-space1"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.445em; padding-bottom: 0.298em; padding-right: 0.106em;">F</span></span><span id="MJXc-Node-21" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">e</span></span></span></span></span></span></span><script type="math/tex" id="MathJax-Element-1">\Large Cu, Ni, Zn, Mg, Ba, Fe</script>. Số kim loại tro

Cho dãy các kim loại: Cu,Ni,Zn,Mg,Ba,FeCu,Ni,Zn,Mg,Ba,Fe. Số kim loại tro

4.5/5

Tác giả: Thầy Tùng

Đăng ngày: 18 Aug 2022

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Câu hỏi:

Cho dãy các kim loại: Cu,Ni,Zn,Mg,Ba,FeCu,Ni,Zn,Mg,Ba,Fe. Số kim loại trong dãy phản ứng với dung dịch FeCl3FeCl3 dư tạo kết tủa là

Đáp án án đúng là: C

Lời giải chi tiết:

Chọn C

- Khi dùng một lượng dư FeCl3FeCl3 thì các kim loại Cu,Ni,Zn,Mg,FeCu,Ni,Zn,Mg,Fe xảy ra phản ứng

M+2FeCl3MCl2+2FeCl2M+2FeCl3MCl2+2FeCl2

- Khi cho BaBa vào dung dịch FeCl3FeCl3 thì: 

Ba+2H2OBa(OH)2+H2Ba+2H2OBa(OH)2+H2

3Ba(OH)2+2FeCl32Fe(OH)3 nâu đỏ +3BaCl2