Acid samples are prepared for analysis by using H 2 SO 4 , H 3 PO 4 and HNO 3 separately or as mixture. What volume of 33.6 ( w / v ) % KOH solution ( d = 1.6 gm / ml ) must be added to samp

Question

Acid samples are prepared for analysis by using $H_{2} SO_{4}, H_{3} PO_{4}$ and $HNO_{3}$ separately or as mixture. What volume of $33.6 (w / v) % KOH$ solution ( $d = 1.6 gm / ml$ ) must be added to sample of 1.96 gm of $H_{3} PO_{4}$ in order to ensure complete neutralisation of acid ?

[Atomic mass : P = 31]

TestHub · Accepted Answer

Maximum volume is required in case of H 3 ​ PO 4 ​ H 3 ​ PO 4 ​ + 3 KOH ⟶ K 3 ​ PO 4 ​ + 3 H 2 ​ O 98 1.96 ​ = 0.02 0.06 56 × 0.06 = V × 100 33.6 ​ V = 10 mL

Chemistry - Stoichiometry Question with Solution | TestHub

Doubts & Discussion