Question

Determine which type of reaction each of the following are: decomposition, formation, combustion, replacement, double replacement (3 pts)
16. 2Fe(s) + 2H2O(l) + O2(g) → Fe2O3. + 2H2
17. 2 KCl(s) → 2 K(s) + Cl2(g)
18. 2AgNO3(aq) + Zn(s) → 2Ag(s) + Zn(NO3)2(aq)
19. HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l)
20. Mg(s) + Cl2 (g) → MgCl2

Answer 1

@JFraser

Answer 2

reactions typically come in 5 major types, you HAVE TO start remembering what their patterns are. i'm looking for an old question that already answers this, so one minute

Answer 3

this isn't the best one, but read through this old question, it may help

http://openstudy.com/study#/updates/537cbb71e4b0cd4f24e6e77a

Answer 4

ok haha thank you I'm still having a hard time understanding though how can I tell what a formation, decomposition, combustion and replacement or double replacement will look like?

Answer 5

would the second be a double replacement?

Answer 6

it's the patterns that will tell you. A synthesis (or formation) will always have MORE THAN ONE reactant and ONLY ONE product.

Answer 7

a decomposition will be the exact opposite

Answer 8

well i guess the 20th is Formation :) "one mole of a compound if formed from its elements"

Answer 9

thank you =) and ok so 17 is decomposition right?

Answer 10

Yes it is :) and ur welcome

Answer 11

would 16 be formation?

Answer 12

umh....yes it can be as one mole of compund is being formed from its element ...but H2O is not an element..so m kinda confused too..

Answer 13

yeahh =( combustion maybe?

Answer 14

it can be...:l

Answer 15

i'll figure it out.....
thank you!

Answer 16

Your Welcome :)