Cho dung dịch chứa a mol <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">B</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-4">a</span><span class="MJXp-mo" id="MJXp-Span-5" style="margin-left: 0em; margin-right: 0em;">(</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-6">H</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-7">C</span><span class="MJXp-msubsup" id="MJXp-Span-8"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-9" style="margin-right: 0.05em;">O</span><span class="MJXp-mn MJXp-script" id="MJXp-Span-10" style="vertical-align: -0.4em;">3</span></span><span class="MJXp-msubsup" id="MJXp-Span-11"><span class="MJXp-mo" id="MJXp-Span-12" style="margin-left: 0em; margin-right: 0.05em;">)</span><span class="MJXp-mn MJXp-script" id="MJXp-Span-13" style="vertical-align: -0.4em;">2</span></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: 0.445em; padding-bottom: 0.298em;">B</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;">a</span></span><span id="MJXc-Node-7" class="mjx-mo"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.445em; padding-bottom: 0.593em;">(</span></span><span id="MJXc-Node-8" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.445em; padding-bottom: 0.298em; padding-right: 0.057em;">H</span></span><span id="MJXc-Node-9" 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-10" class="mjx-msubsup"><span class="mjx-base"><span id="MJXc-Node-11" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.495em; padding-bottom: 0.298em;">O</span></span></span><span class="mjx-sub" style="font-size: 70.7%; vertical-align: -0.212em; padding-right: 0.071em;"><span id="MJXc-Node-12" class="mjx-mn" style=""><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.396em; padding-bottom: 0.347em;">3</span></span></span></span><span id="MJXc-Node-13" class="mjx-msubsup"><span class="mjx-base"><span id="MJXc-Node-14" class="mjx-mo"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.445em; padding-bottom: 0.593em;">)</span></span></span><span class="mjx-sub" style="font-size: 70.7%; vertical-align: -0.212em; padding-right: 0.071em;"><span id="MJXc-Node-15" class="mjx-mn" style=""><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.396em; padding-bottom: 0.347em;">2</span></span></span></span></span></span></span></span></span><script type="math/tex" id="MathJax-Element-1">\Large Ba(HCO_3)_2</script> tác dụng với dung dịch c

Cho dung dịch chứa a mol Ba(HCO3)2Ba(HCO3)2 tác dụng với dung dịch c

4.3/5

Tác giả: Thầy Tùng

Đăng ngày: 18 Aug 2022

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Câu hỏi:

Cho dung dịch chứa a mol Ba(HCO3)2Ba(HCO3)2 tác dụng với dung dịch có chứa a mol chất tan X. Để thu được khối lượng kết tủa lớn nhất thì X là:

Đáp án án đúng là: A

Lời giải chi tiết:

Chọn A

Ba(HCO3)2+Ba(OH)22BaCO3+2H2Oaa2a

mBaCO3=394a(g)

Ba(HCO3)2+H2SO4BaSO4+2CO2+2H2Oaaa

mBaSO4=233a(g)

Ba(HCO3)2+Ca(OH)2CaCO3+BaCO3+2H2O

mBaCO3+mCaCO3=297a(g)

\largeBa(HCO3)2+2NaOHNa2CO3+BaCO3+2H2O

mBaCO3=98,5a(g)