Question

5. In the following reaction CH, NH, +H,0— CH, NH; + OH CH,NH, + H2O ---→ CH,NH,+ + OH- the compound CH,NH, behaves as: a) an acid b) a base c) a salt d) a conjugate acid 26. In an acidic solution the a) concentration of hydronium ion is greater than that of hydroxide ion. b) concentration of hydroxide ion greater than that of hydronium ion. C) concentration of hydronium ion and hydroxide ion are equal 27. In which of the following combinations will the acid and base combine to form sodium sulfite? a) NaOH and H2SO3 b) NaOH and H2SO4 c) Na(OH), and H,SO, d) Na(OH), and H2SO. 28. What is the conjugate base of HNO, in the following equation? HNO, + H,0 – H0+NO," a) H30 b) HO c) HNO d) NO 29. What is the pH of a solution whose concentration is 4.0 x 10 a) 4.00 b) 8.40 c) 3.60 d) 9.00 30. What is the concentration of a H,SO, solution if 15.0 mL of the solution is neutralized by 3.60 mL of a 0.65 M Ca(OH), solution? a) 0.078 M b) 0.16 M c) 0.31 M d) 2.7 M

Answer 1

29 С CH3 NH2 + H20 + CH2 N Hz + OH The compound CH₂ nld be hares as by a baselil i, 267 In acidic solution the a concentratim of hydronimmion is greater than that of hydroxide io. 1. 291 @ Naoh and H₂SO₃ combine to form sodim pulfite HNO3 + 10 -5 H307 + NO2 conjugate base of HNO2 is @ Noo pl = -log[h*] = -log[ 4x109] = 8:40. optim © is correct - acid and base both are visi =V252 diprotic ar 15% S1 = 3.60 x 0.65 or si = 3:60 x 0.65 16 0.156 M V0.16M optim © is correct. is correct 307