____ 2.) Upon addition of 1 mole of each of the followong compounds to 1kg of...
____ 2.) Upon addition of 1 mole of each of the followong compounds to 1kg of water, which will cause the greatest freezing point depression in the solvent?
a.) KF
b.) CCl4
c.) C6H12O6
d.) K2CO3
please explain your reasoning
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____ 2.) Upon addition of 1 mole of each of the
followong compounds to 1kg of...
Question #2 -/1 points How many grams of calcium nitrate need to be dissolved in 75...
Question #2 -/1 points How many grams of calcium nitrate need to be dissolved in 75 mL of water to form a solution that has a freezing point of -3.2 deg C? grams of calcium nitrate Evaluate Question #3 -/1 points What is the freezing point in °C) of a solution of 8.0 g of carbon tetrachloride, CCl4, in 80.0 g of benzene, C6H6. For benzene, Tp = 5.5°C and Kf = 5.12 deg kg mole?? Freezing point of solution...
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Consider 1.00 mole of each of the following substances: 1) NaCl (sodium chloride) 2) CaCl2 (calcium...
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Lab 3: Determination of Molar Mass by Freezing Point Depression 1 During winter, several different "salts"...
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a. (2) On Graph 1, extrapolate and give the freezing point of the pure solvent to...
a. (2) On Graph 1, extrapolate and give the freezing point of the pure solvent to the nearest 0.1°C. Show the extrapolation on graph 1. b. (2) On Graph 2, extrapolate and give the freezing point of the solution to the nearest 0.1 °C. Show the extrapolation on graph 2. c. Determine the change in freezing point (AT) between pure solvent and solution? (3) d. (7) If the molal freezing point depression constant (KI) for the solvent is 1.86 kg°C/mol,...
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question 9.5) can someone please explain to me why CaCO3 is soluble in water and not...
question 9.5)
can someone please explain to me why CaCO3 is soluble in water
and not carbon tetrachloride (CCl4)? thank you ?!
9.35 9.50 9.379.39 9.67 9.41 9.43 9.459.479.499.55 9.57 9.1 Identify the solute and the solvent in each solution composed of the following: a. 10.0 g of NaCl and 100.0 g of H, O b. 50.0 mL of ethanol, C, H, O, and 10.0 mL of H, O c. 0.20 L of O, and 0.80 L of N2 9.5...
If you can please explain step by step for each question. Problem 1, Question 1. Cyclohexae,...
If you can please explain step by step for each question.
Problem 1, Question 1.
Cyclohexae, C6H12, melts at 6.55 oC and has a freezing point
depression constant of kfp = -20.0 oC/m (where m
is molality). You want to determine the molar mass of an unknown
pure compound using the colligative property of freezing point
depression. You weigh out 83.561 g of cyclohexane, and confirm that
its melting point is 6.55 oC. You then mix 2.566 g of your...
Question #2 -/1 points How many grams of calcium nitrate need to be dissolved in 75 mL of water to form a solution that has a freezing point of -3.2 deg C? grams of calcium nitrate Evaluate Question #3 -/1 points What is the freezing point in °C) of a solution of 8.0 g of carbon tetrachloride, CCl4, in 80.0 g of benzene, C6H6. For benzene, Tp = 5.5°C and Kf = 5.12 deg kg mole?? Freezing point of solution...
5. If you had 0.10 m solutions of each of the solutions in question #4, which would have: (hint, more ions cause bigger colligative properties, few particles in solution | K" ("C/m) Pure Solvents Water Ethanol Benzene | Ke rc/m ) 0.512 1.19 2.65 1.86 1.99 -5.12 will have a smaller colligative affect.) d. the highest vapor pressure? e. the lowest freezing point? a. the highest boiling point? b. the highest freezing point? c. the lowest osmotic pressure? 6. Calculate...
Lab 3: Determination of Molar Mass by Freezing Point Depression 1 During winter, several different "salts" are used to melt ice sodium chloride (NaCI), a mix of sodium chloride and magnesium chloride (NaCl and MgCla calcium magnesium acetate (CaMg(CHO)). Assume you have 1 mole of each of these in 1 kg of water. Compare the freezing point depressions of these three "salts." a. b. What is the ratio of moles of "salt" to freezing point depression for each? What is...
a. (2) On Graph 1, extrapolate and give the freezing point of the pure solvent to the nearest 0.1°C. Show the extrapolation on graph 1. b. (2) On Graph 2, extrapolate and give the freezing point of the solution to the nearest 0.1 °C. Show the extrapolation on graph 2. c. Determine the change in freezing point (AT) between pure solvent and solution? (3) d. (7) If the molal freezing point depression constant (KI) for the solvent is 1.86 kg°C/mol,...
20. Which of the following compounds are soluble in water? Explain your reasoning for each compound (a) potassium nitrate, KNO3 (used to manufacture gunpowder) () lithium carbonate, Li2CO3 (used to treat people who suffer from depression) 5 (c) lead(II) oxide, PbO (used to make crystal glass)
XA WinAna): Molarity: M e (mole)/Volume of solution in L), molality me molemas oletne Raoult's law: PAXA PA' AT, kim; AT. - kom - CRT (Gas constant R0.08206 atm-/mol; Henry's law. of gas = k. Per In (p/p) -(AH/R) (1/T2-1/T.): 1 atm = 760 mm He: Avogadro's number: 6.022 x 10" Part 1. Multiple choice problems (45 points: 5 points for each question) 1. Which of the following gases and pressures will result in the greatest as solubility in 1...
question 9.5)
can someone please explain to me why CaCO3 is soluble in water
and not carbon tetrachloride (CCl4)? thank you ?!
9.35 9.50 9.379.39 9.67 9.41 9.43 9.459.479.499.55 9.57 9.1 Identify the solute and the solvent in each solution composed of the following: a. 10.0 g of NaCl and 100.0 g of H, O b. 50.0 mL of ethanol, C, H, O, and 10.0 mL of H, O c. 0.20 L of O, and 0.80 L of N2 9.5...
If you can please explain step by step for each question.
Problem 1, Question 1.
Cyclohexae, C6H12, melts at 6.55 oC and has a freezing point
depression constant of kfp = -20.0 oC/m (where m
is molality). You want to determine the molar mass of an unknown
pure compound using the colligative property of freezing point
depression. You weigh out 83.561 g of cyclohexane, and confirm that
its melting point is 6.55 oC. You then mix 2.566 g of your...
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