Question

How many moles of H2O will be formed from the reaction of 80 g of

NaOH? *
H2SO4 + 2 NaOH = Na2SO4 + 2 H 0

0.5 moles
1 mole
2 moles
4 moles

Answer 1

Answer: 2 moles of
`H_2O` will be formed.

Step-by-step explanation:

To calculate the moles :

`\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}`

`\text{Moles of} NaOH=(80g)/(40g/mol)=2moles`

The balanced chemical equation is:

`H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O`

According to stoichiometry :

2 moles of
`NaOH` give = 2 moles of
`H_2O`

Thus 2 moles of
`NaOH` give =
`(2)/(2)* 2=2moles` of
`H_2O`

Thus 2 moles of
`H_2O` will be formed.