Question

HUU Be sure to answer all parts. Electric generating plants transport large amounts of hot water through metal pipes, and oxygen dissolved in the water can cause a major corrosion problem. Hydrazine (N2H) added to the water avoids the problem by reacting with the oxygen: N2H4(aq) + 026) ► N2()+2 H20(1) About 4 x 10 kg of hydrazine is produced every year by reaquing ammonia with sodium hypochlorite in the Raschig process: 2 NH3(aq) + NaOCl(aq) → N2H4(aq) + NaCl(aq) + H200 AH =-151 kJ (a) If AH of NaCl(aq) = -346 kJ/mol, find ah of N2H4(aq). 951 (b) What is the heat released when aqueous N2H, is added to 5.75 X 10 L of plant water that is 2.50 10 *M02? Enter your answer in scientific notation. 1.80 0 3 heat released

Answer 1

Comment in case of any doubt.

( aNH )+ N2Hy lag) Nacl9)+ K0IL) Naoce (a) AH(MH )AHNaue)+ arf(ou)-2 - AH (Nao AH AHNHu(4) (-407.3) + (-285.8)-2x(-e0-0)-(3y6) 4H(NHu9)) 36.1KJ Answar NHy (4)1) (b) (a)220L), AHn AHn 0 2x (-28s:8) - 36.1 -o 2-607.7 KJ/wal Arount o present in 575X1L 5.75X10Lx50xi 1 437s mel per above eadion 0 hen Lmal Now, a raat aount haatreloaaad +4375 nol a ata So, uhen 4eat aumouut مه مميلفر 607.7 KJx 43 75 mel= 873-6 KJ wa 8.74 X10 KJ heat laasad Answor