Question

What mass of N 2 will be required to produce 34 g of ammonia by the reaction?
N 2 +3H 2 →2NH

Answer 1

Answer:

28 gm

Explanation:

first of all the reaction is

N2+ 3H2 = 2NH3

Now since we obsereve that

1 mol of N2 gives 2 moles of NH3

now since moles of NH3 = mass given / Molar mass = 34 g / 17 g / mol = 2 mol

therefore ,

1 mol of N2 IS PRESENT AS 2 MOLES NH3 ARE FORMED BY 1 MOLE N2 ( IE IF MOLES OF NH3 WERE 4 THEN MOLES OF N2 WOULD HAVE BEEN 2 UNITARY METHOD )

now we will once again use the previous formula

moles = mass given / mm

here let the mass given be x gm

so 1 mol = x / 28 ( mass of N2)

= 28 g ans