\documentclass[12pt]{report}
\usepackage[utf8]{inputenc}
\usepackage{gensymb}
\usepackage[version=3]{mhchem}
\usepackage{mathtools}
\usepackage{float}
\usepackage{booktabs}
\usepackage[bottom]{footmisc}
\usepackage{tocbibind} % fa apparire la bibliography
\usepackage{graphicx}
\graphicspath{{images/}}
\usepackage{dirtytalk}
\usepackage{csquotes}
\usepackage{siunitx}
\usepackage{color, colortbl}
\newcommand{\ammonia}{\ce{NH3}}
\newcommand{\co}{\ce{CO2}}
\newcommand{\water}{\ce{H2O}}
\setlength\parindent{0pt}
\usepackage{enumerate}
\usepackage{listings}
\usepackage{color}
\usepackage{mathptmx}
\usepackage{geometry}
\geometry{a4paper, top=3 cm, left=3.5 cm, right=3.0cm, bottom=3.0cm}
\linespread{1.5}
\renewcommand{\thefootnote}{\alph{footnote}}
\usepackage{ragged2e}
\definecolor{LightCyan}{rgb}{0.88,1,1}
\renewcommand{\thefootnote}{\alph{footnote}}
\usepackage{listings}
\usepackage{xr}
\begin{equation}\label{eq:Ammonia}
\centerline{\ce{2NH3_{(g)} + \co_{(g)} <=> NH2COONH4_{(l)}}
\footnote{$\Delta H =\SI{-117}{\frac{Kj}{mol}}$ at 110 atm and 160\celsius}}
\end{equation}
\begin{equation}\label{eq:urea}
\centerline{\ce{NH2COONH4_{(l)} <=> CO(NH2)2_{(l)} + H2O_{(l)}}
\footnote{($\Delta H =\SI{+15.5}{\frac{Kj}{mol}}$ at 160-180\celsius}}
\end{equation}
I want to display the footnotes at the bottom of the page, but it does not show up.
Best Answer
There are several weaknesses in your code. For instance the usage of
\centerline
that is the cause of your headache and does no purpose at all.You're loading packages and not using them properly. And also packages that duplicate action of others you load. For instance,
gensymb
does nothingsiunitx
can do better. Alsocsquotes
does much better thandirtytalk
.Your preamble is confused and there are many duplications. I removed some of the useless packages (if you load
float
for the[H]
option, don't). Instead ofcolortbl
andcolor
, callxcolor
with thetable
option. Alsotocbibind
should receive thenottoc
option or the table of contents will be listed in the table of contents.I also removed
\linespread{1.5}
; if you need increased interline, usesetspace
.Note that
\SI{-117}{\kilo\joule\per\mol}
avoids the errors of denoting the “kilo” prefix with an uppercase letter and “joule” with a lowercase one. I setper-mode=fraction
, but the result, as you see, is poor.Instead of
mathptmx
, it's much better to do(but I didn't change this).
Finally, instead of footnotes to displayed formulas, I'd simply add the note as text following the display. But you (or your advisor) are the final judge.
(Note: I cheated with the text height in order to produce a smaller picture, but this has no influence on the final result.)