Question

anyone please knows how to find volume strength??​

Answer 1

volume strength is an outdated term referring to the volume of oxygen gas liberated from 1 volume of h2o2 solution .  

for example – if the volume strength is 20 volume , it means that 1 cm3 of h2o2 will produce from 20 cm3 of oxygen gas .  

acc to the equation  

2 moles of h2o2 = 22.4 L of oxygen at STP .  

so, by that first of all u have to calculate the MOLARITY of the solution .  

and use the formula  

moles of solute / volume of solution  

and the volume of solution is given as 11.2  

and u ned to calculate the no of moles .  

and use the formula  

mass/ molar mass , or given mass / molar mass  

and findout the no of moles ,  

THE STRENGTH CAN BE CALCULATED BY THE FOLLOWING FORMULA  

11.2 * MOLARITY OF THE SOLUTION .  

from the prev formula , u find molaritty and apply it here , u will get the strength