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1. In order to predict whether or not a single-replacement reaction takes place, you need to consult a chart that shows the _____. (1 point)
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The options are periodic table
activity series of metals
common polyatomic ions
ionic charges of representative elements
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can you help me with these two3. In a double-replacement reaction, the _____. (1 point)
products are always molecular
reactants are two ionic compounds
reactants are two elements
products are a new element and a new compound
4. Which of the following is a balanced equation representing the decomposition of lead(IV) oxide? (1 point)
PbO2 Pb + 2O
PbO2 Pb + O2
Pb2O 2Pb + O
PbO Pb + O2
General form for a double replacement reaction (salt metathesis reaction):
A-B + C-D → A-D + C-B
So what would you guess?
4. we take in a min.
Ok and for 3 I'd guess B or D
Okay I can say it is not D.
A example of a double replacement reaction could be
BaCl2(aq) + NaSO4 (aq) -> NaCl (aq) + BaSO4 (s)
So is it B
2 sec need to take a look in my chemistry book now i am geting unsure about it is A or B :P
Oh Ok :)
OK here we go:
"Double displacement: This is when the anions and cations of two different molecules switch places, forming two entirely different compounds."
So it is B
A or B can't fully say, can't find any clear 100% fool proof place in my book that say it is true
and 4 i would say should be PbO2 Pb + O2
Ok thank you :)
The answers were B and pb02 + 02 :)
#1: activity series of metals.
#3: reactants are two ionic compounds.
#4: PbO2 ---> Pb + O2