Question

Anyone Help please??

Answer 1

a. 0.5 mol

b. 25 cm³

c. (i) 75 cm³

(ii) 50 cm³

Further explanation

Avogadro's hypothesis:

In the same T,P and V, the gas contains the same number of molecules

So the ratio of gas volume will be equal to the ratio of gas moles

`\tt (V_1)/(n_1)=(V_2)/(n_2)`

Reaction

2NO(g)+O₂(g)⇒2NO₂(g)

a. mol O₂

`\tt mol~O_2=(1)/(2)* 1~mol~NO=0.5`

b. volume of O₂

`\tt (50)/(1)=(V_2)/(0.5)\rightarrow V_2=25`

c. (i)total volume

`\tt volume~NO+volume~O_2=50+25=75~cm^3`

(ii)volume of NO₂

`\tt mol~NO_2=mol~NO=1\rightarrow V~NO=V~NO_2=50~cm^3`