Question

How many moles of water are produced when 3.25 moles of co2 are formed during the combustion of methyl alcohol (ch3oh)? 2ch3oh 3o2 → 2co2 4h2o 1.62 moles 3.25 moles 6.50 moles 13.00 moles

Answer 1

2CH₃OH + 3O₂ → 2CO₂ + 4H₂O

mole ratio of CO₂ : H₂O is 2 : 4 (simplified as 1 : 2)

∴ if moles of CO₂ = 3.25 moles

then moles of H₂O = 3.25 moles × 2

= 6.50 moles

Answer 2

Answer : The number of moles of water produced are, 6.50 moles

Explanation : Given,

Moles of carbon dioxide
`(CO_2)` = 3.25 mole

The given balanced chemical reaction is :

`2CH_3OH+3O_2\rightarrow 2CO_2+4H_2O`

From the given balanced chemical reaction, we conclude that 2 moles of methyl alcohol react with 3 moles of oxygen to produced 2 moles of carbon dioxide and 4 moles of water.

When 2 moles of carbon dioxide is produced then 4 moles of water is also produced

Now, when 3.25 moles of carbon dioxide is produced then
`(4)/(2)* 3.25=6.50moles` of water is also produced

Therefore, the number of moles of water produced are, 6.50 moles