Reaction of BeO with ammonia and hydrogen fluoride gives A which on thermal decomposition gives BeF 2 and NH 4 F. What is ' A prime ?

Question

Reaction of BeO with ammonia and hydrogen fluoride gives A which on thermal decomposition gives BeF 2 and NH 4 F. What is ' A prime ? (A) ( NH 4) BeF 3 (B) H 3 NBeF 3 (C) ( NH 4) Be 2 F 5 (D) ( NH 4)2 BeF 4

Tardigrade Admin · Accepted Answer

BeO +2 NH 3+4 HF arrow( NH 4)2 BeF 4+ H 2 O ( NH 4)2 BeF 4 stackrelΔ longrightarrow BeF 2+ NH 4 F

Q. Reaction of $B e O$ with ammonia and hydrogen fluoride gives A which on thermal decomposition gives $B e F_{2}$ and $N H_{4} F$ . What is ' $A^{'}$ ?

$(N H_{4}) B e F_{3}$

$H_{3} NB e F_{3}$

$(N H_{4}) B e_{2} F_{5}$

$(N H_{4})_{2} B e F_{4}$

$B e O + 2 N H_{3} + 4 H F \to (N H_{4})_{2} B e F_{4} + H_{2} O$
$(N H_{4})_{2} B e F_{4} ⟶ Δ B e F_{2} + N H_{4} F$

Q. Reaction of BeO with ammonia and hydrogen fluoride gives A which on thermal decomposition gives BeF2​ and NH4​F. What is ' A′ ?

(NH4​)BeF3​

H3​NBeF3​

(NH4​)Be2​F5​

(NH4​)2​BeF4​