ms.HCl = 73 g , c% = 10%
c% = mdx100/ms
=> md.HCl = msxc/100
= 73x10/100 = 7,3 g HCl
M.HCl = 1+35,5 = 36,5 g/mol
M.KOH = 39+16+1 = 56 g/mol
7,3 g md g
HCl + KOH --> KCl + H2O
73 56
=> md.KOH = 7,3x56/73 = 5,6 g KOH
ms.KOH = mdx100/c
= 5,6x100/5,6 = 100 g sol. KOH