Transcript B27-.Journal B27-.Journal - 2016 - draft - fixed 2_2.ppsx

LEARNING TARGET: I can determine which metal is
most effective in reclaiming copper from copper chloride
solution. I can use evidence to inform a decision on
which is the most VIABLE (workable) metal to use.
NOV 29 / 30
Act B27
Reclaiming the Metal
CHALLENGE Q
Which metal is best at reclaiming copper from the used
copper chloride solution?
VOCAB:
reclaim (reclamation)
get back
(recover)
best reaction today (minus the best metal x):
don't feel overwhelmed, just read left to right
taking each piece one at a time, focus on important ones
reactants
products
6CuCl2 + 6H2O + 6x  3H2 + 4xCl3 + 6Cu + 2x(OH)3
metal to
do
reclaiming
hazardous
waste
water
hydrogen
gas
(bubbles)
reclaimed
copper
PROC AND DATA
MATERIALS:
PROCEDURE: B 71-73
DATA: WS 27.1 (24.2 again)
do activity
some copper present
complete reaction for today:
notice aluminum added for best reaction
** DO NOT COPY THIS – IT'S JUST FOR COMPARISON
reactants
products
6CuCl2 + 6H2O + 6Al  3H2 + 4AlCl3 + 6Cu + 2Al(OH)3
Al to do
reclaiming
hazardous
waste
water
hydrogen
gas
(bubbles)
reclaimed
copper
Considering the trade-offs:
What factors do you think should be considered in
selecting a metal to use to reclaim copper?
keep in mind…
NOV 2016 metal prices:
http://www.kitcometals.com/
Fe (iron) = $0.07 / lb
Al = $0.80 / lb
Zn (zinc) = $1.26 / lb
Cu = $2.62 / lb
also show table next slide
Considering the trade-offs:
What factors do you think should be considered in
selecting a metal to use to reclaim copper?
use most effective metal (but not expensive) to get more
valuable metal reclaimed
how much copper reclaimed
how much waste metals allowed to go into environment
long-term environmental impact
ANALYSIS:
none
ANS CHALLENGE Q
Which metal is best at reclaiming copper from the used
copper chloride solution?
A: aluminum
HW:
1. Conservation of Mass HW (10pts, due next class)