Na\(_2\)S\(_2\)O\(_3\)(aq) + 2HCl(aq) → 2NaCl(aq) + H\(_2\)O(l)
Which of the following would introduce the greatest increase in the rate of the chemical reaction above?
- An increase in temperature and decrease in the concentration of the reactant
- A decrease in the volume and increase in the pressure of the reactant
-
A decrease in the temperature and an incease in the concentration of the reactant
- An increase in temperature and an increase in the concentration of the reactant
The correct answer is: C
Explanation
Generally speaking, all neutralization reactions are considered exothermic, meaning they release heat during the reaction; this is because the formation of water molecules from the hydrogen ions of an acid and hydroxide ions of a base is a highly stable bond formation, releasing energy in the process.
In every exothermic reaction, a decrease in temperature will favour the forward reaction,likewise increasing the concentration of the reactant. Option C