Question

Can somebody help me solve this? Thank you!

Reagents Unknowns pH KOH AgNO, BaCl, NacI NH(a) NaS NasO. HSco HCl HNO3 H2SO4 KOH NH3** Na2S NaCl CuCl2 a 10 12 13 14 16 17 18 19 21 23 24 26 28 30 32 35 37 38 39 40 41 42 43 45 46 47 48 49 51 52 53 54 56 57 58 59 61 65 67 68 70 AgNO3 Cu(NO3)2 a Fe(NO3)3 74 75 76 78 80 81 82 85 91 92 93 95 96 Nal 98 100 101 102 103 104 105 106 107 108 109 110 112 Na2CO3

Answer 1

HCl --------------- ACidic

HNO3 --------    Acidic

H2SO4 -------------- acidic

KOH ---------------- Basic

NH3 ------------------- basic

Na2S --------------- Basic ( because it is formed from strong base weak acid H2S. i,e Anionc hydrolysis)

NaCl ------------------ neutral ( because is formed from strong acid HCl and Strong base NaOH.i,e no hydrolysis )

Fe(NO3)3 ------------ acidic ( it is formed from weak base Fe(OH)3 and strong acid HNO3. i,e cation hydrolysis)

Na2CO3-------------- basic ( it is formed from strong base NaOH and weak acid H2CO3. ,i,e anionc hydrolysis)