You have a powder that dissolves in water to form a strong acid. You dissolve 2g...
You have a powder that dissolves in water to form a strong acid. You dissolve 2g of the powder in 100ml of water, and measure the pH to be 4. You would like to form 100ml of a solution with pH 5. How many grams of the powder do you dissolve in 100ml of water?
- 0.2 g
- 0.4 g
- 20 g
- 40 g
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You have a powder that dissolves in water to form a strong acid.
You dissolve 2g...
1. A comic book villain is holding you at gun point and is making you drink...
1. A comic book villain is holding you at gun point and is making you drink a sample of acid. She gives you a beaker with 100ml of a strong acid with pH=5. She also gives you a beaker of a strong base with a pH=10. You can add as much of the strong base to the strong acid as you want, and you must then drink the solution. You'd be best off trying to make the solution neutral before...
G of sodium nitrate (NaNO,) dissolves in 100 g of water at 20°C. Is this solution saturated or un...
g of sodium nitrate (NaNO,) dissolves in 100 g of water at 20°C. Is this solution saturated or unsaturated? Wha t would happen if you added ten more grams of sodium nitrate to the solution? What would if you added the ten grams and raised the temperature to 40 C? lution is unsaturated. Adding ten additional grams of solute (NaNO,) would result in a homo geneous solution. Raising the temperature of the solution by 20°C would not affect the solution...
Part 2: pH and pOH Calculations 1) You dissolve 0.1500 moles of formic acid (monoprotic, K...
Part 2: pH and pOH Calculations 1) You dissolve 0.1500 moles of formic acid (monoprotic, K = 1.8 x 10-) in 2.50 L of water. Calculate the pH of this solution. Use the quadratic formula for this calculation (just to prove you can do it!), i.e., don't use the approximation that x «[...) 2) You dissolve 15.0 grams of propanoic acid (monoprotic, MW = 74.08 g/mol, Ka = 1.3 X 10"") in 95.00 ml of water. Calculate the pol of...
A. For the recrystallization lab, you had 1.0 grams of benzoic acid. What volume of water...
A. For the recrystallization lab, you had 1.0 grams of benzoic acid. What volume of water would it take to dissolve the sample at 100 °C given the solubility data below for benzoic aid in water? You cool the solution of the given volume of water from part a to 0 °C, what mass of benzoic acid remains dissolved in the solution and what mass precipitates out? b. If you then let the solution increase to 25 °C, what mass...
11. How many grams of ammonia (NH3) would you need to dissolve in enough water to make exactly 450 mL of solution with a...
11. How many grams of ammonia (NH3) would you need to dissolve in enough water to make exactly 450 mL of solution with a pH of 10.00? (Kb =1.8x10-5) How is the answer 0.00502 g? please explain each step
parts d and e please Assume that you dissolve 0.235 g of the weak acid benzoic...
parts d and e please
Assume that you dissolve 0.235 g of the weak acid benzoic acid, C.H.COOH, in enough water to make 1.00×10 mL of solution and then titrate the solution with 0.108 M NaOH. Benzoic acid is a monoprotic acid. Ka = 6.3x10-5 1. What is the pH of the original benzoic acid solution before the titration is started? pH= 2.96 A. How many moles of acid do you have? _1.9x108__moles B. What is the initial molarity of...
What pH would you make the water layer in order to cause both compounds to dissolve...
What pH would you make the water layer in order to cause both compounds to dissolve in it? Water should have pH 4.5 - 9.5. Water should have pH 4.5 - 7.5. Water should have pH 6.5 - 9.5. Water should have pH 6.5 - 7.5. Part B What pH would you make the water layer in order to cause the acid to dissolve in the water layer and the amine to dissolve in the ether layer? What pH would...
Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to...
Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 5.00 ✕ 102 mL of solution and then titrate the solution with 0.128 M NaOH. C6H5CO2H(aq) + OH-(aq) C6H5CO2-(aq) + H2O(ℓ) What are the concentrations of the following ions at the equivalence point? Na+, H3O+, OH- C6H5CO2- _____ M Na+ _____ M H3O+ _____ M OH- _____ M C6H5CO2- What is the pH of the solution? pH = please help if you can...
Assume you dissolve 0.367 g of the weak acid benzoic acid, CH3CO2H, in enough water to...
Assume you dissolve 0.367 g of the weak acid benzoic acid, CH3CO2H, in enough water to make 1.00 x 102 mL of solution and then titrate the solution with 0.101 M NaOH. K, for benzoic acid = 6.3 x 10-5) CH, CO,H(aq) + OH- (aq) = CH,CO, - (aq) + H20(0) a. What was the pH of the original benzoic acid solution? pt pl pH = pt b. What are the concentrations of all of the following ions at the...
Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to...
Assume you dissolve 0.235 g of the weak acid benzoic acid,
C6H5CO2H, in enough water to make
9.00e2 mL of solution and then titrate the solution with
0.138 M NaOH.
C6H5CO2H(aq) + OH-(aq)
C6H5CO2-(aq) +
H2O(ℓ)
What are the concentrations of the following ions at the
equivalence point?
_____ M Na+
_____ M H3O+
_____ M OH-
______ M
C6H5CO2-
What is the pH of the solution?
g of sodium nitrate (NaNO,) dissolves in 100 g of water at 20°C. Is this solution saturated or unsaturated? Wha t would happen if you added ten more grams of sodium nitrate to the solution? What would if you added the ten grams and raised the temperature to 40 C? lution is unsaturated. Adding ten additional grams of solute (NaNO,) would result in a homo geneous solution. Raising the temperature of the solution by 20°C would not affect the solution...
Part 2: pH and pOH Calculations 1) You dissolve 0.1500 moles of formic acid (monoprotic, K = 1.8 x 10-) in 2.50 L of water. Calculate the pH of this solution. Use the quadratic formula for this calculation (just to prove you can do it!), i.e., don't use the approximation that x «[...) 2) You dissolve 15.0 grams of propanoic acid (monoprotic, MW = 74.08 g/mol, Ka = 1.3 X 10"") in 95.00 ml of water. Calculate the pol of...
A. For the recrystallization lab, you had 1.0 grams of benzoic acid. What volume of water would it take to dissolve the sample at 100 °C given the solubility data below for benzoic aid in water? You cool the solution of the given volume of water from part a to 0 °C, what mass of benzoic acid remains dissolved in the solution and what mass precipitates out? b. If you then let the solution increase to 25 °C, what mass...
parts d and e please
Assume that you dissolve 0.235 g of the weak acid benzoic acid, C.H.COOH, in enough water to make 1.00×10 mL of solution and then titrate the solution with 0.108 M NaOH. Benzoic acid is a monoprotic acid. Ka = 6.3x10-5 1. What is the pH of the original benzoic acid solution before the titration is started? pH= 2.96 A. How many moles of acid do you have? _1.9x108__moles B. What is the initial molarity of...
What pH would you make the water layer in order to cause both compounds to dissolve in it? Water should have pH 4.5 - 9.5. Water should have pH 4.5 - 7.5. Water should have pH 6.5 - 9.5. Water should have pH 6.5 - 7.5. Part B What pH would you make the water layer in order to cause the acid to dissolve in the water layer and the amine to dissolve in the ether layer? What pH would...
Assume you dissolve 0.367 g of the weak acid benzoic acid, CH3CO2H, in enough water to make 1.00 x 102 mL of solution and then titrate the solution with 0.101 M NaOH. K, for benzoic acid = 6.3 x 10-5) CH, CO,H(aq) + OH- (aq) = CH,CO, - (aq) + H20(0) a. What was the pH of the original benzoic acid solution? pt pl pH = pt b. What are the concentrations of all of the following ions at the...
Assume you dissolve 0.235 g of the weak acid benzoic acid,
C6H5CO2H, in enough water to make
9.00e2 mL of solution and then titrate the solution with
0.138 M NaOH.
C6H5CO2H(aq) + OH-(aq)
C6H5CO2-(aq) +
H2O(ℓ)
What are the concentrations of the following ions at the
equivalence point?
_____ M Na+
_____ M H3O+
_____ M OH-
______ M
C6H5CO2-
What is the pH of the solution?
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