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and as the ionic charge (a) decreases, decreases (b) increases, decreases (e) increases, increases (d) decreases,...
10. Fill in each blánk with increases or decreases As K, increases, acid strength As Kb increases, base strength As pK, increases, acid strength As pKb increases, base strength As acid strength increases, conjugate base strength The stronger an acid, the the conjugate base. (stronger or weaker) HoCI NH4 11. a) Which is the HS stronger acid? stronger acid? stronger base? stronger base? HF pk-3.14 CH,OH pk, 10.0 b) Which is the c) Which is the d) Which is the...
Please help me with all 33... meanthing (A),(B),(C),(D), and (E). What volume in mL of 0.500 M solution of HC10_4(aq) is needed lo neutralize 100 mL of 0.200 M NaOH(aq) solution? (Start by writing and balancing the reaction.) (a) 10.0 mL (b) 20.0 mL (c) 40.0 mL (d) 80.0 mL (e) none of these
C2H4O2 A) CH404 CH -LCX A -D-22 b- 1.00-- 09 D- 4) Determine the molarity of a solution formed by dissolving 97.7 g LiBr in enough water to yield 750.0 mL of solution A) 0.130 M B ) 2.30 M C ) 0.768 M D ) 1.50 M E) 1.18 M 5) Which of the following is an acid base reaction? A) MgSO4(aq) + Ba(NO3)2(aq) - Mg(NO3)2(aq) +BaSO4(s) B) 2 HCIO4(aq) + Ca(OH)2(aq) -2 H2O(l) + Ca(C104)2(aq) C) C(s) +...
Which statements about viscosity are true? 0 (ii) (1) Viscosity increases as temperature decreases. Viscosity increases as molecular weight increases. Viscosity increases as intermolecular forces increase. A) (i) only B)(ii) and (ii) C) (i) and (iii) D) none E) all ANSWER. Write the word or phrase that best completes each statement or answers the question. 18) The rate-determining step is the elementary step 18) IPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 19),...
You observe the relationship between A and B and realize that if A increases B decreases. What equation would best describe this relationship? A = k B, with k > 0 A = k log(B) A = kB, with k < 0 A = k/b is a determination of what elements, ions, compounds are present in a sample. Quantitative analysis Qualitative analysis Physical analysis Substantiated analysis 0.1 M Hydrochloric acid (HCl) is titrated into a beaker containing 25 mL of...
5. Which of the following species is amphiprotic in aqueous solution? (a) CH3NH2 c) NH4 (e) HSO (d) F (b) Н:0" 6, Use Table 15.2 (page 529) to decide whether the species on the left or those on the right are favored by the reaction. a. NH4 (aq) + H2PO4" (aq) # NH3(aq) + HsPO b. HCN (aq) + HS(aq) CN" (aq) +H2S c. HCO +OH CO2 H2S d. Al(H20)6 3+ +OH = Al(H20) s2+ OH 7. The equilibrium constant...
help calculating pH. not sure if answwer is correct (B)Increases concentration of O2 (C) Equilibrium constant decreases (D) Equilibrium constant increases 28. Consider 0.15 M NH3 solution? Kb of ammonia is 1.8 x 105 (ii) What is the pH? a 11.68 (b. 2.79 3.42 C. d. 10.58 Which species predominate, reactants or products in a solution of (iii) Calculate the % dissociation. (iv)
Please answer all of 9 The boiling point of water decreases when a. Salt is added to it When the external pressure is increa When external pressure is decreased When it is frozen d. 9. 0) What is the formula for Aluminum chloride? The density of 5.0 mass% Aluminum Chloride (i) What is the molality(m)? solution is 1.09 g/mL. (ii) What is the molarity(M)? (iv) (v) (vi) Is it a strong electrolyte or a weak electrolyte? What is the concentration...
2. Wrte net ionic equations for a, b,and d in Q. 1 above. 3. A solution was prepared by dissolving 1.564 g of NacI and 2.765 g of KCI in some water and diluting t exactly 250 mL in a graduated flask. What is the molarity of Na', K' and Cr ions in the solution? 4. Suppose you have a solution that might contain Al*, Ca2, Ag', and Zn2 ions. Addition of HCI gave a white precipitate. After filtering off...
9) An increase in the temperature of a solution usually A) increases the boiling point. B) increases the solubility of a gas in the solution. C) increases the solubility of a solid solute in the solution. D) decreases the solubility of a solid solute in the solution. E) decreases the solubility of a liquid solute in the solution. 10) The solubility of Kl is 50 g in 100 g of H20 at 20°C. If 110 grams of Kl are added...