The following concentrations were obtained for the formation of NH 3(g) from N 2(g) and H 2(g) at equilibrium and at 500 K :[ N 2]=1 × 10-2 M,[ H 2]=2 × 10-2 M and [ NH 3]=2 × 10-2 M. The equilibrium constant, Kc, for the reaction N 2(g)+3 H 2(g) leftharpoons 2 NH 3(g) at 500 K is

Question

The following concentrations were obtained for the formation of NH 3(g) from N 2(g) and H 2(g) at equilibrium and at 500 K :[ N 2]=1 × 10-2 M,[ H 2]=2 × 10-2 M and [ NH 3]=2 × 10-2 M. The equilibrium constant, Kc, for the reaction N 2(g)+3 H 2(g) leftharpoons 2 NH 3(g) at 500 K is (A) 5 × 103 mol -2 dm 6 (B) 1 × 103 mol -2 dm 6 (C) 5 × 102 mol -2 dm 6 (D) 2 × 103 mol -2 dm 6

Tardigrade Admin · Accepted Answer

[N2]=1 × 10-2 M [H2]=2 × 11-2 M [ NH 3]=2 × 10-2 M N2(g)+3 H2(g) leftharpoons 2 NH 3(g) text Equilibrium constant, Kc=([ NH 3]2/[ N 2][ H 2]3) ∴ Kc=((2 × 10-2)2/(1 × 10-2)(2 × 10-2)3) =((2 × 10-2)2-3/1 × 10-2)=(1/(1 × 10-2)(2 × 10-2)) =0.5 × 104 mol -2 dm 6 =5 × 103 mol -2 dm

$5 \times 1 0^{3} m o l^{- 2} d m^{6}$

$1 \times 1 0^{3} m o l^{- 2} d m^{6}$

$5 \times 1 0^{2} m o l^{- 2} d m^{6}$

$2 \times 1 0^{3} m o l^{- 2} d m^{6}$

$2 \times 1 0^{3} m o l^{- 2} d m^{6}$

Q. The following concentrations were obtained for the formation of NH3​(g) from N2​(g) and H2​(g) at equilibrium and at 500K:[N2​]=1×10−2M,[H2​]=2×10−2M and [NH3​]=2×10−2M. The equilibrium constant, Kc​, for the reaction N2​(g)+3H2​(g)⇌2NH3​(g) at 500K is

5×103mol−2dm6

1×103mol−2dm6

5×102mol−2dm6

2×103mol−2dm6

2×103mol−2dm6

[N2​]=1×10−2M [H2​]=2×11−2M [NH3​]=2×10−2M N2​(g)+3H2​(g)⇌2NH3​(g) Equilibrium constant, Kc​=[N2​][H2​]3[NH3​]2​ ∴Kc​=(1×10−2)(2×10−2)3(2×10−2)2​ =1×10−2(2×10−2)2−3​=(1×10−2)(2×10−2)1​ =0.5×104mol−2dm6 =5×103mol−2dm

$5 \times 1 0^{3} m o l^{- 2} d m^{6}$

$1 \times 1 0^{3} m o l^{- 2} d m^{6}$

$5 \times 1 0^{2} m o l^{- 2} d m^{6}$

$2 \times 1 0^{3} m o l^{- 2} d m^{6}$

$2 \times 1 0^{3} m o l^{- 2} d m^{6}$