Each of the following multiple choice are worth 3 points each. Write the answer on the line provided or you will lose points. 8. Which of the following compounds is least soluble in water? A) CH CH2CH2NH2. C) CH CH(OH)CH3. E) CH CH2NHCHs. B) CH CH2CH2F D) CH CH2COOH. 9. C Which of the following pure substances has the highest normal boiling point? HI B) HCI D) H2S ) HBr Which of the following is an ionic solid? B) Ne(s) D) SiO2(s) C) Na(s) E) CO2(s) The solubility of a gas in a liquid can always be increased by A) decreasing the pressure of the gas above the solvent. B) increasing the pressure of the gas above the solvent. increasing the temperature of the solvent. D) decreasing the polarity of the solvent. E) decreasing the temperature of the gas above the solvent. Rank the following molecules in order of increasing normal boiling poirt CH:CH2OH, CH3CH2CH2OH, CH3CH20CH3. A) lowest CH CH CH OH, CH:CH20CHs, CH:CH2OH highest. B) lowest CHsCH2OH, CH:CH2OCH3, CH&CH CH2OH highest. C) lowest CH,CH2CH2OH, CH&CH2OH, CH:CH20CHs highest. D) lowest CH,CH2OCHs, CH;CH2CH2OH, CH:CH20H highest. E) lowest CH3CH2OCHs, CHsCH2OH, CH CH2CH2OH highest.