A student is given two clear solutions. One solution contained lead ions, Pb2+ and the other solution contains chloride ions, Cl

Question

4 years ago

7

-. When the two solutions are mixed, a clear solution with white powder at the bottom results. What has happen to cause this change?

2 answers:

larisa86 [58] · Answer 1 · 2021-12-05T03:01:33+03:00

4 0

<span>A chemical change has occurred creating a precipitate.
Just had that question on a quiz. XP

Hope I helped :)</span>

Sloan [31] · Answer 2 · 2021-12-05T04:02:51+03:00

Answer: A chemical change has occurred.

Explanation: A chemical change is a change which results when there is a change in the chemical composition of the atoms.

Chemical changes are accompanied by:

a) Change in color

b) Absorption or release of heat

c) formation of precipitates

d) production of gas

$Pb^{2+]+2Cl^-\rightarrow PbCl_2(s)$

The white powder is precipitates of lead chloride $PbCl_2(s)$ which do not dissolve.