CHEMISTRY-MASTERINGCHEMISTRY W/ETEXT
8th Edition
ISBN: 9780135204634
Author: Robinson
Publisher: PEARSON
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Chapter 11, Problem 11.49SP
How much energy in kilojoules is released when 25.0 g of ethanol vapor at 93.0 °C is cooled to -11.0 °C? Ethanol has mp = 114.1 °C, bp = 78.3 °C,
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CHEMISTRY-MASTERINGCHEMISTRY W/ETEXT
Ch. 11 - Prob. 11.1PCh. 11 - The normal boiling point of water is 100.0 C, and...Ch. 11 - PRACTICE 11.1 The boiling point of ethanol is 78.4...Ch. 11 - APPLY 11.2 Chloroform CHCl3 has Hvap=29.2kJ/mol...Ch. 11 - How much heat is required to convert15.0 g of...Ch. 11 - APPLY 11.4 What is the sign and magnitude of q...Ch. 11 - Look at the phase diagram of H2O in Figure 11.7,...Ch. 11 - Prob. 11.8ACh. 11 - Why was a new solvent needed for extracting...Ch. 11 - A fire extinguisher containing carbon dioxide has...
Ch. 11 - Look at the phase diagram of CO2 in Figure11.13,...Ch. 11 - Liquid carbon dioxide is also used as non-toxic...Ch. 11 - For the phase transition CO2(s)CO2(g), predict the...Ch. 11 - A sample of supercritical carbon dioxide was...Ch. 11 - Assume that you have a liquid in a cylinder...Ch. 11 - The phase diagram of a substance is shown below....Ch. 11 - Prob. 11.17CPCh. 11 - Prob. 11.18CPCh. 11 - The following compound undergoes a phase...Ch. 11 - A magnetized needle gently placed on the surface...Ch. 11 - Water flows quickly through the narrow neck of a...Ch. 11 - Predict which substance in each pair has the...Ch. 11 - Prob. 11.23SPCh. 11 - The chemical structure for oleic acid, the primary...Ch. 11 - Prob. 11.25SPCh. 11 - Prob. 11.26SPCh. 11 - The vapor pressure of SiCI4 is 100 mm Hg at 5.4 C,...Ch. 11 - What is the vapor pressure of CS2 in mm Hg at 20.0...Ch. 11 - What is the vapor pressure of SiCI4 in mm Hg at...Ch. 11 - Dichloromethane, CH2CI2, is an organic solvent...Ch. 11 - Prob. 11.31SPCh. 11 - Use the plot you made in Problem 11.30 to find a...Ch. 11 - Prob. 11.33SPCh. 11 - Prob. 11.34SPCh. 11 - Prob. 11.35SPCh. 11 - Prob. 11.36SPCh. 11 - Acetone,acommon laboratorysolvent,has...Ch. 11 - Why is Hvap usually larger than Hfusion ?Ch. 11 - Why is the heat of sublimation, Hsubl, equal to...Ch. 11 - Naphthalene, better known as "mothballs," has bp =...Ch. 11 - Prob. 11.41SPCh. 11 - Prob. 11.42SPCh. 11 - Prob. 11.43SPCh. 11 - Prob. 11.44SPCh. 11 - Prob. 11.45SPCh. 11 - How much energy in kilojoules is needed to heat...Ch. 11 - Prob. 11.47SPCh. 11 - How much energy in kilojoules is released when...Ch. 11 - How much energy in kilojoules is released when...Ch. 11 - Prob. 11.50SPCh. 11 - Prob. 11.51SPCh. 11 - Prob. 11.52SPCh. 11 - Prob. 11.53SPCh. 11 - Prob. 11.54SPCh. 11 - Look at the phase diagram of H2O in Figure 11.7,...Ch. 11 - Prob. 11.56SPCh. 11 - Oxygen has Tt=54.3K,Pt=1.14mmHg,Tc=154.6K, and...Ch. 11 - Prob. 11.58SPCh. 11 - Prob. 11.59SPCh. 11 - Prob. 11.60SPCh. 11 - Prob. 11.61SPCh. 11 - Benzene has a melting point of 5.53 C and a...Ch. 11 - Prob. 11.63SPCh. 11 - How many phase transitions did you pass through in...Ch. 11 - Prob. 11.65SPCh. 11 - Prob. 11.66SPCh. 11 - Prob. 11.67SPCh. 11 - Prob. 11.68SPCh. 11 - Prob. 11.69SPCh. 11 - Prob. 11.70SPCh. 11 - Prob. 11.71SPCh. 11 - Prob. 11.72SPCh. 11 - Prob. 11.73SPCh. 11 - For each of the following substances, identify the...Ch. 11 - The chlorofluorocarbon refrigerant...Ch. 11 - Prob. 11.76MPCh. 11 - Prob. 11.77MP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Why are steam burns so much worse than water burns even if the H2O is at the same temperature for both phases? Hint: Consider the heat of vaporization of water.arrow_forwardWhich would you expect to have the higher fusion enthalpy, N2 or I2? Explain your choice.arrow_forwardThe enthalpy of vaporization of water is larger than its enthalpy of fusion. Explain why.arrow_forward
- Consider a substance X with a Hvap = 20.3 kJ/mol and Hfus = 9.0 kJ/mol. The melting point, freezing point, and heat capacities of both the solid and liquid X are identical to those of water. a If you place one beaker containing 50 g of X at 10C and another beaker with 50 g of H2O at 10C on a hot plate and start heating them, which material will reach the boiling point first? b Which of the materials from part a, X or H2O, would completely boil away first? c On a piece of graph paper, draw the heating curve for H2O and X. How do the heating curves reflect your answers from parts a and b?arrow_forwardUse Figure 11.7 to estimate the boiling point of carbon tetrachloride, CCl4, under an external pressure of 250 mmHg.arrow_forwardA 0.250-g chunk of sodium metal is cautiously dropped into a mixture of 50.0 g water and 50.0 g ice, both at 0C. The reaction is 2Na(s)+2H2O(l)2NaOH(aq)+H2(g)H=368kJ Assuming no heat loss to the surroundings, will the ice melt? Assuming the final mixture has a specific heat capacity of 4.18 J/gc, calculate the final temperature. The enthalpy of fusion for ice is 6.02 kJ/mol.arrow_forward
- Diethyl ether (CH3CH2OCH2CH3) was one of the first chemicals used as an anesthetic. At 34.6C, diethyl ether has a vapor pressure of 760. torr, and at 17.9C, it has a vapor pressure of 400. torr. What is the H of vaporization for diethyl ether?arrow_forwardIn each of the following groups of substances, pick the one that has the given property. Justify your answer. a. highest boiling point: HBr, Kr, or Cl2 b. highest freezing point: H2O, NaCl, or HF c. lowest vapor pressure at 25C: Cl2, Br2, or I2 d. lowest freezing point: N2, CO, or CO2 e. lowest boiling point: CH4, CH3CH3, or CH3CH2CH3 f. highest boiling point: HF, HCl, or HBr g.arrow_forwardMethane, CH4, reacts with chlorine, Cl2, to produce a series of chlorinated hydrocarbons: methyl chloride (CH3Cl), methylene chloride (CH2Cl3), chloroform (CHCl3), and carbon tetrachloride (CCl4). Which compound has the highest vapor pressure at room temperature? Explain.arrow_forward
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