Answer to Question #343068 in General Chemistry for zaza

Question

In a reaction between Mg and hydrochloric acid:

Mg(s) + HCl(aq) —> MgCl₂(aq) + H₂(g)

Given the data below. Examine the data. What is the average rate of reaction?

Time

2

6

8

Mass of Magnesium

0.012

0.010

0.006

0.004

Answer 1

The rate of a reaction ( V ) is the change in the concentration of a substance that reacts or is formed during this unit of time:

V = ∆C / ∆t

∆C = C₂ - C₁

∆t = t₂ - t₁

C₂ — initial concentration

C₁ — final concentration

t₂ — initial time

t₁ — final time

V = (0,012-0,004) / (8-0)= 0,008 / 8 = 0,001

ANSWER: 0,001