Answer:
Between 5.5 to 7.5
The optimum pH range for most plants is between 5.5 and 7.5
The percent yield : 73.5%
<h3>Further explanation</h3>
Given
Reaction
C+2H₂⇒CH₄
Required
The percent yield
Solution
mol of Carbon(as a limiting reactant) :
mol CH₄ based on C, and from equation mol ratio C : CH₄, so mol CH₄ = 8.3
Mass of Methane(theoretical yield) :
2NaOH=Na2O +H2O
The coefficient of NaOH is 2
On adding salt.....The boiling temperature increases.....
So ∆t= KB * molality
=O.52*(58/58)/4
= O.52*1/4
= 0.13
So increase is 100+.13=100.13°c