Effect of Hypo Solution Concentration on Reaction Rate with Hydrochloric Acid

Chemistry 1
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Chemistry 2
Title:
How does the concentration of hypo solution affect the rate of reaction with hydrochloric acid.
Aim:
To investigate how the concentration of hypo solution affects the rate of reaction time with
hydrochloric acid.
THEORY
The viability and level of reaction are very significant in any chemical reaction. The viability of
a chemical reaction can be anticipated by thermodynamics and the level can be obtained from
chemical equilibrium. Such as extent and feasibility, it is significant to understand that the
factors and the rate influencing the chemical reaction rate1.
In any chemical reaction, the reactant is used up, as a result, new products will be produced.
The chemical reaction is shown below
Sodium Thiosulphate + Hydrochloric acid Sulphur + Sodium Chloride + Sodium
Dioxide + Water.
Na2S203+2HCL S +2NaCl +SO2+H2O
Some of the factors which affect this type of reaction include the following
 Temperature
1 Mohamed, Ahmed. 2011. Chemistry of enthalpy. 3rd. London: Springer.

Chemistry 3
 The concentration of the reactant
 Catalyst
 Physical state
A spontaneous chemical reaction between the hypo solution and the hydro chloric acid can be
illustrated by the following diagram.
Fig 1: Showing the spontaneous reaction diagram
For this reaction, the concentration of the hypo-solution is the independent variable while the
dependent variable is the rate of reaction as measured by the time the cross took to disappear.
But this reaction is controlled by the following variables2.
 The volume of hydrochloric acid
 The volume of hypo solution
Materials:
2 Lvov, Boris. 2012. Thermal Decomposition of Solids and Melts: New Thermochemical Approach
to the Mechanism, Kinetics, and Methodology. 3rd. Hull: Springer Science & Business Media.