I am trying to figure out how to calculate the reaction rate.

In my question the reaction rate is:
1/2x molarity of sodium thiosulfate/reaction time

Then I have to compare the rates of runs 1-3 and determine the orders of the reaction.
Do I only find the reaction rate based off of the sodium thiosulfate?

To calculate the reaction rate, you need to determine the change in concentration of a substance over a specific time interval. In your case, the reaction rate is expressed as 1/2x (molarity of sodium thiosulfate) divided by the reaction time.

To find the reaction rate, you need to have data on the change in concentration of sodium thiosulfate over a certain time period. If you have collected such data for runs 1-3, you can calculate the reaction rates for each run separately.

For example, let's say you have the molarity of sodium thiosulfate at different time intervals for runs 1-3 as follows:

Run 1:
- Initial concentration: C₁₀₀
- Concentration after time t₁: C₁

Run 2:
- Initial concentration: C₂₀₀
- Concentration after time t₂: C₂

Run 3:
- Initial concentration: C₃₀₀
- Concentration after time t₃: C₃

To find the reaction rate for each run, you can use the formula:
Reaction rate = (Cₙ - C₀) / tₙ

Where:
- Cₙ is the final concentration of sodium thiosulfate
- C₀ is the initial concentration of sodium thiosulfate
- tₙ is the time interval

By substituting the values for each run, you can calculate the reaction rate for each run separately.

After calculating the reaction rates for runs 1-3, you can compare them to determine the order of the reaction. The order of the reaction can be determined by analyzing how the reaction rate changes with the concentration of the reactants.

If the reaction rate increases proportionally with an increase in the concentration of sodium thiosulfate, the reaction is considered to be first order with respect to sodium thiosulfate. If the reaction rate doubles when the concentration of sodium thiosulfate doubles, it is a first-order reaction.

However, if the reaction rate changes nonlinearly with changes in the concentration of sodium thiosulfate (e.g., doubling the concentration does not double the reaction rate), the reaction is not first order with respect to sodium thiosulfate. In such cases, you would need more data to determine the order of the reaction accurately.

It is important to note that determining the reaction order requires additional data such as the concentrations of other reactants and the corresponding reaction rates.

yes.