Question

Please help with this one question ill give medal and become a fan :)
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)

Answer 1

The options are periodic table
activity series of metals
common polyatomic ions
ionic charges of representative elements

Answer 2

@Frostbite can u help

Answer 3

I would say activity series of metals.

Answer 4

Ok thanks

Answer 5

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

Answer 6

General form for a double replacement reaction (salt metathesis reaction):
A-B + C-D → A-D + C-B
So what would you guess?

Answer 7

4. we take in a min.

Answer 8

Ok and for 3 I'd guess B or D

Answer 9

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)

Answer 10

So is it B

Answer 11

2 sec need to take a look in my chemistry book now i am geting unsure about it is A or B :P

Answer 12

Oh Ok :)

Answer 13

OK here we go:
"Double displacement: This is when the anions and cations of two different molecules switch places, forming two entirely different compounds."

Answer 14

So it is B

Answer 15

A or B can't fully say, can't find any clear 100% fool proof place in my book that say it is true

Answer 16

and 4 i would say should be PbO2 Pb + O2

Answer 17

Ok thank you :)

Answer 18

The answers were B and pb02 + 02 :)

Answer 19

Perfect? ^^

Answer 20

Yep :)

Answer 21

#1: activity series of metals.
#3: reactants are two ionic compounds.
#4: PbO2 ---> Pb + O2