Homework Answers
5)
Phenol has hydrogen attached to oxygen.
So, phenol can form hydrogen bonds whereas hexane is non
polar.
Hexane will only have dispersion forces.
Due to greater intermolecular forces in phenol, molecules are more attracted to each other and hence it is more viscous
6)
H2O is polar. So, it dissolves polar moelcule
CH3CH2OH is more soluble because of less number of carbon and
hydrogen which are non polar.
Answer: CH3CH2OH
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pb5& pb6
Pb.5. Pentanol (CsH,OH, M.M. = 88.15 g/mol) has nearly the same molar mass as...
Ethane (molar mass 30.07 g/mol) boils at-88.6℃ Methanol has almost the same molar mass (32.04 g...
Ethane (molar mass 30.07 g/mol) boils at-88.6℃ Methanol has almost the same molar mass (32.04 g mol), but boils at 65℃, which of the following BEST explains the reason for the large discrepancy in boiling point? Choose one: A. Ethane is ionic and, therefore, has a lower boiling point. B. Methanol is ionic and, therefore, has a higher boiling point. C. Both compounds only exhibit van der Waals forces. D. Both compounds are polar. Methanol is more polar than Ethane....
Sugar is easily soluble in water and has a molar mass of 342.30 g/mol. What is...
Sugar is easily soluble in water and has a molar mass of 342.30 g/mol. What is the molar concentration of a 245.6 mL aqueous solution prepared with 78.3 g of sugar? Suppose you have 350.0 mL of a 0.450 M sodium hydroxide solution. How many moles of sodium hydroxide are in the solution? Calculate the percent by mass of a solution made from 17 g NaCl (the solute) and 67 g water. Suppose you need to prepare 141.5 mL of...
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Potassium nitrate, KNO3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 23.0 g of KNO, is dissolved in 383 g of water at 23.00 °C. HO KNO,(s) + (aq) + NO3(aq) The temperature of the resulting solution decreases to 18.40 °C. Assume that the resulting solution has the same specific heat as water, 4.184 J/(g. "C), and that there is negligible heat loss to the surroundings. How much heat was released by the solution? Poln What is...
A generic solid, X, has a molar mass of 72.6 g/mol. In a constant-pressure calorimeter, 16.6...
A generic solid, X, has a molar mass of 72.6 g/mol. In a constant-pressure calorimeter, 16.6 g of X is dissolved in 365 g of water at 23.00 °C. X($) — X(aq) The temperature of the resulting solution rises to 27.80 °C. Assume the solution has the same specific heat as water, 4.184 J/(g°C), and that there is negligible heat loss to the surroundings. How much heat was absorbed by the solution? 9 kJ What is the enthalpy of the...
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Potassium nitrate, KNO3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 44.1 g...
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