1. If 0.02% of a 0.6 M weak acid ionizes in a solution, what is the pH of the solution?
2. Which of the following solutions would have the highest boiling point? Explain. a) 0.2 m KCl b) 0.2 m glucose c) 0.2 m CaCl2 d) 0.2 m Al2O3
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1. If 0.02% of a 0.6 M weak acid ionizes in a solution, what is the...
Consider the following four liquids and/or solutions. pure water a 0.3 m solution of glucose in water a 0.2 m solution of lithium bromide in water a 0.1 m solution of magnesium bromide in water Place the liquids and/or solutions in order of (a) lowest freezing point to highest freezing point (b) lowest boiling point to highest boiling point (c) lowest osmotic pressure to highest osmotic pressure
in (acetylsalicyclic acid HCH,04) is a weak acid. It ionizes in water according to the following equation HC,H,O4(aq) + H2O + H20aq) + CH-07 (aq) 0.10 M aqueous solution of aspirin has a pH of 2.27 at 25°C. Calculate K, for the aspirin (Hint: Use ICE chart). (5) I 0.1 OM с - х E 0.10 - X 8. A certain acid was found to have a pk,=4.88. What is the K, for this acid? Is it stronger or weaker...
A weak acid, HA, is 0.1% ionized in a 0.2 M solution. Answer the following questions: a) What is the equilibrium constant (Ka) for the dissociation of this acid? b) What is the pH of the solution? c) How much ‘weaker’ in active acidity of the HA solution compared to 0.2 M HCl solution? d) How many mls of 0.1 M NaOH would be needed to neutralize completely 250 ml of the 0.2 M HA solution?
4. Which of the following water solutions would you expect to have the highest boiling point? a) 0.2 m C2H602 b) 0.1 m CaCl2 c) 0.2 m NaOH d) 0.05 m Na2SO.4 e) 0.15 m NaCI
6.16 Classify each of the following solutes as an electrolyte or a nonelectrolyte a. NaNO3 b. C6H12O6 c. FeCl3 6.26a Calculate the composition of 20.0 g acetic acid dissolved in 2.50 L in mass/volume% 6.28b Calculate the %m/m composition of 50.0 g KCl in 5.00 x 102 mL solution (d=1.14g/mL) 6.30a How many g of solute are needed to prepare 2.50x102 g of 5.00% (m/m) NH4Cl? 6.34 How many mL of 4.0 mass/volume % Mg(NO3)2 solution would contain 1.2 g...
Consider the following data on some weak acids and weak bases: acid Ka name formula nitrous acid HNO2 ×4.510−4 acetic acid HCH3CO2 ×1.810−5 base Kb name formula ammonia NH3 ×1.810−5 ethylamine C2H5NH2 ×6.410−4 Use this data to rank the following solutions in order of increasing pH. In other words, select a ' 1 ' next to the solution that will have the lowest pH, a ' 2 ' next to the solution that will have the next lowest pH, and...
1. A 0.100 M solution of the weak acid HB has a pH of 3.00. What are the [H+], [B-], and Ka for this acid? 2. A solid acid is dissolved in water. Half the solution is titrated to a phenolphthalein end point with NaOH solution. The neutralized and acid solutions are then mixed and the pH of the resulting solution is found to be 4.60. Find Ka of the solid acid. 3. Assuming your buffered solution contains acetic acid,...
36.53 mL of a 0.223 M solution of weak acid HA are titrated with 0.2 M NaOH. What is the pH of the solution after 8.25 mL of the NaOH have been added? The Ka for the weak acid is 0.0000077101.
Which aqueous solution has the highest boiling point? (A) 1.0 m acetic acid, CH3COOH (B) 1.0 m sulfuric acid, H2SO4 (C) 1.0 m phosphoric acid, H3PO4 (D) 1.0 m glucose, C6H12O6 Answer is B. Why?
1. Which of the following compounds should be soluble in CC14? a) Naci b ) H20 c) NaOH d) C3H18 e) None of these 2. with increasing CO2 pressure and_ with The solubility of carbon dioxide gas in water increasing temperature. a) increases, increases b) increases, decreases c) decreases, increases d) decreases, decreases e) remains constant, decreases 3. Pressure . Based on the Raoult's Law plot for a mixture of liquids A and B shown on the right, which of...