Question

Needing some assistance. How do I solve the following problems?

#30 What is the pH of a solution of...:

#31 What is fhe final concentration when...:

#32 How much ____ is needed to make 875 mL of 0.24 M solution...?

#33 What is the normality of...:

#30 What is the pH of a solution of: 0.022 M pyridine (pkb = 8.77)? 0.87 MF, (pKa = 7.2 x 10")? 1.12 M NO: (HNO2 pka 4.0 x 10+)? 1.84 M iodic acid (pKa = 0.160? 0.094 M HCIOZ (Ka = 1.1 x 10°)? #31 What is the final concentration when: 3.58 mL of 15.7 M NH3 is diluted to 570 mL 22.75 mL of 10.3 M HCOOH is diluted to 785 mL 18.25 mL of 8.33 M HN3 1.65 L is needed to make 875 mL of 0.24 M solution? #32 How much 2.35 M HCI 0.96 M HBr 1.22 M H2SO4 #33 What is the normality of: 5.67 M H3PO4 9.24 M H2SO4 6.35 M HCOOH 1.35 M LiOH 0.65 M Mg(OH)2

Answer 1

30) 0.022 (6) pidime affit= 14- 1 B Kit Llogc=(8.79 0.87(M) - > pita od Aka -Źlogc = [0:03] 2012 (9) No. 7 pH= = bla" logo = -0.027 . 1984/m) Iodic Acid & pH = e pka - I log c = -0.05] 00094(m) HClO_7 bhaje boka- Ľlogo = [199]

3) [wn]- 385 7=0.019() [HOCOH)- 22.75x10-3 785 -0.299(0) [HN] - 2xy -33 1650 = 0·092{m)

32, Volume of Hcl reeded - 375X024 S1363) 199.36ml/ de Veluweme * HBe resided : 8752394 = 28: 75 mb I Volume of A, Sou needed to gpsd 24 = 172-13 mL veded - 0096 1:22
33)
Normality do 115.67 14 00, -65-6723 -17-01(w) · 179.38() H,50,= (4.2442) 18.48(N) * Hy 6.38(M) HCOOH + 16-35(w) I iv) 1:35() LiOH= (1-35 (0)] 70-65(M) 0.65) 71307