Question

(1) What is the difference between thermodynamics and kinetics?

(2) According to Table 1, run 1, once all solutions are added, what is the concentration of HCl assuming the initial concentration of HCl was 0.0500 M?

Table 1. Master Volume Table Beaker A Beaker B KI Volume Na2S203 H2O Volume H2O2 Volume HCl Volume Run (mL) (mL) (mL) Volume (mL) (mL) 10 10 10 10 10 10 15 10

(3) What is the value of x if: 10.00 = 2.00^x?

(4) In the example described in Figure 1, why can we ignore (the concentrations of) [H+] and [I-]?

(5) If a reaction has partial orders with respect to [A] = 1, [B] = 1, and [C] = 2, what is the overall order of the reaction?

Answer 1

1) Thermodynamics gives us idea about physibility of reaction (whether the reaction is possible or not), It also tells us about heat evolved or required for the reaction (exothermic or endothermic)

Kinetics gives us time required to complete the reaction and rate of reaction that proceeds.

3) 10 = 2^(x)

take natural logarithm of both the sides

ln(10) = x* ln(2)

Therefore, x = ln(10) / ln (2)

= 3.322

5) Overall order = order w r t A + order w r t B+ order w r t C

   = 1+1+2 = 4