Question

The standard enthalpy of formation of NH_2(g) id -46 KJ mol^-1.The standard enthalpy of formation of H_2O(g) is -242 KJ middot mol^-1. The enthalpy of reaction is 906 kl. The standard enthalpy of formation of NO(g)is a. -754.5 kJ middot mol^-1 b. -362 kJ middot mol^-1 c. -196.5 kJ middot mol^-1 d. -90.5 k middot J-mol^-1 e. +90.5 kJ middot mol^- 1 f. +182.5 kJ middot mol^-1 g.+317 kJ middot mol^-1 h. +362 kJ middot mol^-1 i. +409 kJ middot mol^-1 j.+730 kJ middot mol^-1 k. None of the above, the correct enthalpy of formation is__________ The percent ionic character is given by the equation % ionic character = 100% {1 - exp[(-1/4)(x_B- x_A)^2]}) Among following bonds, the one with the highest ionic character is: a. Cr-O b. Hg-O c. Mg-O d. Ni-O e. P-O g. Sn-O h. W-O

Answer 1

ven standard enthalmtof 어formaleon 14-106 K丁 @ N.+3H1()_ INH3(a) ) ΔΗ:-46kJhol me 2

Reverse eqmation Add : 2xey@ + 3xa@+ey® 2N2 + 3H2 → 2NH3 3x e1@ : 6H2O _) 6H2 + 300 ,小一242RO hid ridd by 4

03 4 4 .66 P2 I9 Pu 33 Ho M1.3| IMg Ni 1.a ะ 40-45% P- D 100 | |-exp (, (344-2-19) 32133 26.5 % ,dm_ D = looll-Cup ( (3 44-1.qc)*)} 421%

25.29% hal Mg-0 has the tighul