6. Exactly 1.0 moles of each of the following compounds is dissolved in I OL of
ID: 489052 • Letter: 6
Question
6. Exactly 1.0 moles of each of the following compounds is dissolved in I OL of water. Which would bave the lowest p value HCO, b) HCI c) NHA d) KOH e) Hacos 7. In the following reaction HF is an acid and F is its conjugate base. b) HF is an acid and HPO is its conjugate base c) HPO is an acid and H2PO4 is its conjugate base. d) H2PO is an acid and F is its conjugate base. e) HPO is an acid and HF is its conjugate base. 8. What is the conjugate base of ICrH (aq? HyOT 9. The conjugate acid of HSO is d) H2O b) Soe3 c) H2SO4 a) OH ho At 15 °C, the water ionization const K., is 45 x 10 is what is the Hyo concentration in neutral water at this temperature? e) 2.2M a) 2.0 x 102 M b) 4.5 x 10 15 M c) 6.7 x 10 M 1.5 x 10 M 11. A solution is prepared by diluting 0.16 mol HNOs with water to a volume of 1.5L what is the pH of this solution? e)2.24 a) -0.80 b) 0.80 c) 0.97 .12. At 25 °C, what is the H30 concentration in 0,044 M NaoH(aq)? (Kw 1.0 x 10 H) e) 12.6 M a) 4.4 x 10 M b) 2.3 x 10 13 M c) 4.4 x 10 M d) 1.36 M 13. Which of the following aqueous solutions will have a pH of 10.00 25 (K x 10 14) at C? one a) 1.0 x 10' M HCI b) 1.0 x 102 M HNO3 c) 1.0 x 10 M HBr d) 1.0 x 104 M NaOH e) 1.0 x 10 M KOH 78Explanation / Answer
6. b
HCl is strong acid
7. HF + HPO4-2 ------------> H2PO4- + F-
acid base conjugate acid base
HF and F- are conjugate acid and base
a. Hf is acid and F- is conjugate base
8. ]Cr(H2o))6]3+ -------------->[ Cr(H2O)5OH}2+
b. [ Cr(H2O)5OH}2+
9. HSO4- ----------> H2SO4
c. H2So4
10. in neutral solution [H3O+] = [OH-]
Kw = [H3O+][H3O+]
4.5*10^-15 = [H3O+]^2
[H3O+] = 6.7*10-8 M
11. molarity = no of moles/volume in L
= 0.16/1.5 = 0.1066M
[H+] = [HNO3]
PH = -log[H+]
= -log0.1066 = 0.9722
c. 0.9722
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.