10g of hydrogen is brunt in the presence of excess oxygen . The mass of water formed is

Asked by gharatpooja70 | 22nd Jun, 2020, 08:22: PM

Expert Answer:

Burning of hydrogen is written as-
2 straight H subscript 2 space plus space straight O subscript 2 space rightwards arrow 2 straight H subscript 2 straight O
10 g of H2 means 10/2=5 moles of H2.
According to stoichiometry,
2 space space mole space of space straight H subscript 2 space space end subscript produces equals space 2 space mole space of space water
5 space mole space of space straight H subscript 2 space will space produce equals space 5 space mole space of space water

1 space mole space of space water space have equals 18 space straight g
So comma space 5 space mole space of space water space will space have equals 5 cross times 18 equals 90 space straight g space space of space water space

Answered by Ravi | 22nd Jun, 2020, 10:14: PM