How many molecules of water are formed when the following equation is balanced?

Question

How many molecules of water are formed when the following equation is balanced?
Al2O3+HCI---I--- AICI3+H20
1)1
2)2
3)3
4)4
5)6

Answer 1

3

Al2O3 + 6HCl --> 2AlCl3 + 3H2O

Answer 2

1) 1

Answer 3

i could first rewrite the equation into: hi + H2SO4 --> I2 + H2S In redox equations H2O is used to stability the type of Oxygens and is many times not blanketed interior the commencing up, even nevertheless it is going to artwork out later. Iodine undergoes oxidation, as its oxidation sort is going from a million- to 0 (I- --> I2). Sulfur undergoes alleviation, as its oxidation sort is going from 6+ to 2- (SO4^2- --> H2S). So stability each oxidation/alleviation 0.5 reactions one after the other: hi --> I2 First stability all aspects different than H and O. 2HI --> I2 Then upload H2O to stability Oxygen.(not needed right here yet is needed for the different 0.5 reaction.) 2HI --> I2 Then upload H+ to stability the Hydrogen. 2HI --> I2 + 2H+ Then upload e-(electrons) to stability the fees. 2HI --> I2 + 2e- + 2H+ For the different 0.5 reaction, persist with the comparable steps above: H2SO4 --> H2S H2SO4 --> H2S + 4H2O 8H+ + H2SO4 --> H2S + 4H2O 8e- + 8H+ + H2SO4 --> H2S + 4H2O so we've 2 balanced 0.5 reactions: 2HI --> I2 + 2e- + 2H+ 8e- + 8H+ + H2SO4 --> H2S + 4H2O multiply the precise 0.5 reaction by 4 and upload the two reactions, cancelling out words that are the comparable on the two aspects of the equation. Multiplying by 4 supplies comparable sort of e- on the two aspects(for this reason cancelling out), because it is the purpose in different redox equations. even nevertheless subsequently, H+ additionally conviniently cancels out. very final equation: 8HI + H2SO4 --> H2S + 4H2O + 4I2 increasing it out to in superb condition your unique: 8I- + SO4^2- + 10H+ --> 4I2 + H2S + 4H2O be sure to envision that the two aspects incorporate the comparable sort of each aspects and equivalent rates.

Answer 4

3.) 3

Answer 5

3) 3.

Answer 6

too long too old to figure it out.
The ans is 3?

Answer 7

THREE =]