Dissolving 1.24 g of white phosphorous in boiling NaOH solution in an inert atmosphere gives a gas Q. The amount of CuSO 4 (in g) required to completely consume the gas Q is [Given: Atomic mass of H =1, O =16, Na =23, P =31, S =32, Cu =63 ]

Question

Dissolving 1.24 g of white phosphorous in boiling NaOH solution in an inert atmosphere gives a gas Q. The amount of CuSO 4 (in g) required to completely consume the gas Q is [Given: Atomic mass of H =1, O =16, Na =23, P =31, S =32, Cu =63 ] (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Mole of P 4=(1.24/31 × 4)=0.01 underset0.01 text mole P 4+3 NaOH +3 H 2 O longrightarrow underset0.01 text mole PH 3+3 NaH 2 PO 2 underset0.012 PH 3+ underset(3/2) × 0.013 CuSO 4 arrow Cu 3 P 2+3 H 2 SO 4 =(0.03/2) text moles W CuSO 4=(0.03/2) × 159=2.385 gm

Q. Dissolving 1.24g of white phosphorous in boiling NaOH solution in an inert atmosphere gives a gas Q. The amount of CuSO4​ (in g) required to completely consume the gas Q is ___ [Given : Atomic mass of H=1,O=16,Na=23,P=31,S=32,Cu=63 ]

Mole of P4​=31×41.24​=0.01 0.01 mole P4​+3NaOH​+3H2​O⟶0.01 mole PH3​​+3NaH2​PO2​ 0.012PH3​​+23​×0.013CuSO4​​→Cu3​P2​+3H2​SO4​ =20.03​ moles WCuSO4​​=20.03​×159=2.385gm

Q. Dissolving $1.24 g$ of white phosphorous in boiling $N a O H$ solution in an inert atmosphere gives a gas $Q$ . The amount of $C u S O_{4}$ (in g) required to completely consume the gas $Q$ is ___
[Given : Atomic mass of $H = 1, O = 16, N a = 23, P = 31, S = 32, C u = 63$ ]