How do you write an equation for the process "Sodium thiosulfate dissolves in water"? Chemistry Chemical Reactions Chemical Reactions and Equations 1 Answer anor277 Dec 8, 2016 #Na_2S_2O_3(s) rightleftharpoons2Na^+(aq) + S_2O_3^(2-)(aq)# Explanation: #(aq)# stands for the aquated sodium ion, or the aquated thiosulfate ion; the ion surrounded by several water molecules. This is understood to be in solution. Answer link Related questions Question #fee47 Question #c5c15 Question #19eb9 Question #e2ea2 Question #bc751 Question #e2ea6 Question #08b07 What is the thermochemical equation for the combustion of benzene? Why are chemical reactions reversible? Why are chemical reactions important? See all questions in Chemical Reactions and Equations Impact of this question 9083 views around the world You can reuse this answer Creative Commons License