# Problem: For the reactionIO3–(aq) + 5I–(aq) + 6H+(aq) → 3I2(aq) + 3H2O(l)the rate of disappearance of I–(aq) at a particular time and concentration is 2.6 × 10–3 mol/(L · s). What is the rate of appearance of I2(aq)?A) 4.3 × 10–3 mol/(L • s)B) 7.8 × 10–3 mol/(L • s)C) –1.6 × 10–3 mol/(L • s)D) 1.6 × 10–3 mol/(L • s)E) 6.4 × 10–3 mol/(L • s)

###### FREE Expert Solution

We’re being asked to calculate the rate of appearance of I2(aq) if the rate of disappearance of I(aq) at a particular time and concentration is 2.6 × 10–3 mol/(L · s).

Recall that the average rate of a reaction is given by:

$\overline{){\mathbf{Rate}}{\mathbf{=}}\frac{\mathbf{∆}\left[A\right]}{\mathbf{∆}\mathbf{time}}}$

where:
Δ[A] = change in concentration of reactants or products (in mol/L or M)
Δtime = change in time
. ###### Problem Details

For the reaction

IO3(aq) + 5I(aq) + 6H+(aq) → 3I2(aq) + 3H2O(l)

the rate of disappearance of I(aq) at a particular time and concentration is 2.6 × 10–3 mol/(L · s). What is the rate of appearance of I2(aq)?

A) 4.3 × 10–3 mol/(L • s)

B) 7.8 × 10–3 mol/(L • s)

C) –1.6 × 10–3 mol/(L • s)

D) 1.6 × 10–3 mol/(L • s)

E) 6.4 × 10–3 mol/(L • s)