Question

Which of the following combinations of reactants will result in a synthesis reaction? (2 points)

Li + HCl
Al + O2
Ca + H2O
F2 + HCl

Answer 1

Al+o2=?

Answer 2

What do you mean =? @surjithayer

Answer 3

do you know what a synthesis reaction is?

Answer 4

Nah i dont.

Answer 5

http://chemistry.about.com/od/chemicalreactions/a/synthesis-reaction.htm

Answer 6

I read it

Answer 7

I honestly don't know this question though.

Answer 8

so you have to look at what you'll get if the reaction takes place. what you get should result in a single compound using all of the reactants.

so A + B -> AB

look at the first reaction:

Li + HCl -> what are you going to get here?

Answer 9

LITHIUM & HYDROGEN

Answer 10

2Li+2HCl-->2LiCl+H2

Answer 11

\(2Li + 2HCl \rightarrow 2LiCl + H_2\) so is this a synthesis reaction?

Answer 12

mmmm not sure but i don't think so

Answer 13

no, it's not. the reactants didn't synthesize into one compound, the reaction created 2 compounds, LiCl (lithium chloride) and H_2 (hydrogen gas).

Answer 14

what about the next reaction... what are we gonna get with that?

Answer 15

Aluminum & Oxygen

Answer 16

no, that's what we start with. what are we gona get after they react?

Answer 17

so is that a synthesis reaction?

Answer 18

Yes. I think so.

Answer 19

there you go.

Answer 20

Wow bro thanks lol

Answer 21

Can you help with more??

Answer 22

what about the others?

Answer 23

Which of the following is a product formed when CaCO3 decomposes? (2 points)

Ca2
O2
CO2
CaO2

Answer 24

\(\text{Ca} + \text{H}_2\text{O}\rightarrow\text{?}\)

Answer 25

?? what does that mean

Answer 26

this is from your original question.

Answer 27

I thought we found the answer?

Answer 28

Al + O2

Answer 29

wasn't sure if there could be more than one.

Answer 30

Nah its multiple choice

Answer 31

Back to the other question.

Answer 32

do yo know what a decomposition reaction is?

Answer 33

Which of the following is a product formed when CaCO3 decomposes? (2 points)

Ca2
O2
CO2
CaO2

Answer 34

AB -> A + B

Answer 35

The oppositee.

Answer 36

CO2.

Answer 37

yep so look at what you start with and see which one seems like a likely product. keep in mind, what else you'll get.

Answer 38

CaCO3 -> CaO + CO2

Answer 39

youu have to heat it to get it to do that, though.

Answer 40

so the answer is CaO2

Answer 41

no... look at what i wrote. you chose the correct product

Answer 42

i'm not even sure that CaO2 forms

Answer 43

Oh so its CO2 since thats the product.

Answer 44

yep. CaO2 does form (not from this decompostion, though), it's Calcium Peroxide.

Answer 45

Which of the following is a product formed when K reacts with Cl2? (2 points)

KCl
K2Cl
KCl2
K2

Answer 46

Can you give me just the answer please?

Answer 47

nope. in fact, i gotta run. see ya. good luck.

Answer 48

alright thanks

Answer 49

2Al+3O2=Al2O3

Answer 50

2K+Cl2=2KCl