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# What is the volume strength of molar solution of hydrogen peroxide

$(a)\;11.2vol\qquad(b)\;112vol\qquad(c)\;1.12vol\qquad(d)\;112.2vol$

Volume Strength of $H_2O_2$ is the volumes of $O_2$ released on decomposition of one volume of $H_2O_2$ at STP.
On heating $H_2O_24 decomposes as follows$2H_2O_2 \Rightarrow \Delta 2H_2O + O_2$If we take 1 mole$H_2O_2$solution and decompose it completely it will release 0.5 mole of O2. . At STP one mole of any gas occupies 22.4L So, 0.5 mole of$O_2$will occupy 22.4L/mole$\times$0.5mole=11.2L. If the molarity of a$H_2O_2$solution is M, 1L of this solution will have M moles of$H_2O_2$in it and 1L of it on decomposition will give$\large\frac{M}{2}$moles of$O_2$.$\large\frac{M}{2}$moles of$O_2$will occupy 22.4L/mole$\times \large\frac{M}{2}$mole=11.2ML. This 11.2M L of$O_2$has come from 1L of$H_2O_2$solution of molarity M. So, if the molarity of a$H_2O_2\$ solution is M, its volume strength will be 11.2M.