Question

A (aq) + 2 B (aq) ⇌ 2 C (aq) For the reaction above and the ICE table below, what value should be placed in the Change for the concentration of A? Make sure you use the correct sign.

Answer 1

-0.01 M

Step-by-step explanation:

Let's consider the following reaction.

A(aq) + 2 B(aq) ⇌ 2 C(aq)

We will make an ICE chart.

A(aq) + 2 B(aq) ⇌ 2 C(aq)

I 0.10M 0.10M 0M

C -x -2x +2x

E 0.10-x 0.10-2x 2x

According to the chart, the concentration of C at equilibrium is:

2x = 0.02

x = 0.01

The value in the change row for A is:

-x = -0.01 M