Question

25. The pH of 0.15 M trim ethyl ammonium chloride, (CH3)NHCl a salt, is 5.34. What is the percent hydrolysis? 26. When the following skeletal equation, which represents a reaction taking place in acid solution, is balanced using smallest possible whole numbers. the coefficient of I^- is: Cu^2+ +I^- = Cul + I2. 27. When the following equation is balanced with the smallest possible integer coefficients, what is the coefficient of H^+? _ Cr^+_ H^+ =_ Cr^3+ + _ H2 28. Which of the following reaction is an oxidation-reduction reaction? (a) NaCl + AgNO3 = AgCl + NaNO3 (b) CaSO3 + 2HCl = CaCl2 + H2O + SO2 (c) NaNO2 + HCl = NaCl + HNO2 (d) 3Ca(OH)2 + 2H3PO4 = Ca3(PO4)2 + 3H2O (e) 3CuO + 2NH3 = 3Cu + 3H2O + N2

Answer 1

25. 100 x 5.34/13,1760913= 40%

26. Cu^2+ +2I^- = Cul + I2. 

27. H^+1_ Cr^+1_ H^+ =_ Cr^3+ + _ H2

28. (e) 3CuO + 2NH3 = 3Cu + 3H2O + N2