0.98 g of a polybasic acid (molar mass 98) requires 30 mL of 0.5M `Ba(OH)_(2)` for complete neutralization. The basicity of acid is …………

Answer

3

Explanation

For complete neutralization
Meq of acid = meq of base
`(g)/(E) xx 1000 = N_(b) xx V_(b)`
`(0.98)/(98//x) xx 1000 = 0.5 xx 2 xx 30` (n-factor for `Ba(OH)_(2) = 2`) `rArr x = 3`