Answer:
hope this answer will help you.
Step-by-step explanation:
in order to find the volume of HCl we use formula C1V1=C2V2
where C1=concentration of HCl and V1 is the volume of HCl while C2 is concentration of KOH and V2 is the volume me of KOH
C2V2/C1=V1
1.2×3.5/0.8= 5.25L
so, the volume of HCl is 5.25L which 5.3 after round off the figure
the correct option is "d"