Khí <span class="MathJax_Preview" style="color: inherit;"><span class="MJXp-math" id="MJXp-Span-1"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-2">C</span><span class="MJXp-msubsup" id="MJXp-Span-3"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-4" style="margin-right: 0.05em;">O</span><span class="MJXp-mn MJXp-script" id="MJXp-Span-5" style="vertical-align: -0.4em;">2</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-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-4" class="mjx-msubsup"><span class="mjx-base"><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;">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-6" 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><script type="math/tex" id="MathJax-Element-1">CO_2</script> điều chế trong phòng thí nghiệm thường lẫn khí HCl. Để loại