# Question #7c8b9

Aug 14, 2017

Oral rehydration solution (ORS) consists of 25.2 g sugar and 2.1 g of salt in 1 L of water.

#### Explanation:

This is the recipe for home-made ORS.

The ORS recipe recommended by WHO and UNICEF (also known as reduced-osmolarity ORS) is:

$\boldsymbol{\text{Compound"color(white)(mmml)"g/L"color(white)(m)"mmol/L"color(white)(m)"mOsmol/L}}$
$\text{NaCl} \textcolor{w h i t e}{m m m m m m m l l} 2.6 \textcolor{w h i t e}{m m l l} 44.5 \textcolor{w h i t e}{m m m m m} 89$
$\text{Glucose} \textcolor{w h i t e}{m m m m m m} 13.5 \textcolor{w h i t e}{m m l l} 75 \textcolor{w h i t e}{m m m m m l l} 75$
$\text{KCl} \textcolor{w h i t e}{m m m m m m m m l} 1.5 \textcolor{w h i t e}{m m l l} 20 \textcolor{w h i t e}{m m m m m l l} 40$
$\text{Na"_3"C"_6"H"_5"O"_7·2"H"_2"O} \textcolor{w h i t e}{m} 2.9 \textcolor{w h i t e}{m m l l} 10 \textcolor{w h i t e}{m m m m m l l} 40$
$\textcolor{w h i t e}{m m m m m m m m m m l} \text{Total Osmolarity =} \textcolor{w h i t e}{m} 244$

$\text{Na"_3"C"_6"H"_5"O"_7·2"H"_2"O}$ is sodium citrate dihydrate.

The normal osmolarity of blood is about 300 mOsmol/L.