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19 Nov 2019
FALL 2017 EXAM II 10-26-17 Part I. Fill in the blank and short answer cro points) 1. Give the oxidation number for C in H,CP 2. Match each substance to a chemical property, use each tronbae NAME Te in Na,Te N in NH A. oxidizer D. acid anhydride KOH (aq) B. weak acid so,(g) HF (aq) O, (g) The molar mass of AgNO, I grams. It is dissolved in water to make 250.0 mL. of solution. is 169.87 g/mol. The molar concentration (molarity) is 169.8/ mol/L 4. Balance this reduction half reaction, which occurs in acid solution: 5. A balloon was filled with ideal gas and sealed at a volume of 2.5 liters at 20 C If the pressure remains constant, what will the balloon's volume be if it is cooled to -10 °C? into a flask A stock acid solution has a concentration of 2.60 mol/L. If 20.00 mL of this is pi and mixed with pure water to make 250.0 mL of diluted solution, what will be the final concentration? 6. mol/L 7. Balance this oxidation half reaction, which occurs in base solution: AI (s) Alo,, (aq) â 8. A dilute HCI (aq) solution has a concentration of 0.0026 mol/L. The pH is Given the molar heat of formation below each substance, calculate ì¨ for the reaction 2 CH, (g) + 5 o, (g) â 4 CO2 (g) + 2 HO a) 9. AH- (all in kJ/mol) +227 -394286
FALL 2017 EXAM II 10-26-17 Part I. Fill in the blank and short answer cro points) 1. Give the oxidation number for C in H,CP 2. Match each substance to a chemical property, use each tronbae NAME Te in Na,Te N in NH A. oxidizer D. acid anhydride KOH (aq) B. weak acid so,(g) HF (aq) O, (g) The molar mass of AgNO, I grams. It is dissolved in water to make 250.0 mL. of solution. is 169.87 g/mol. The molar concentration (molarity) is 169.8/ mol/L 4. Balance this reduction half reaction, which occurs in acid solution: 5. A balloon was filled with ideal gas and sealed at a volume of 2.5 liters at 20 C If the pressure remains constant, what will the balloon's volume be if it is cooled to -10 °C? into a flask A stock acid solution has a concentration of 2.60 mol/L. If 20.00 mL of this is pi and mixed with pure water to make 250.0 mL of diluted solution, what will be the final concentration? 6. mol/L 7. Balance this oxidation half reaction, which occurs in base solution: AI (s) Alo,, (aq) â 8. A dilute HCI (aq) solution has a concentration of 0.0026 mol/L. The pH is Given the molar heat of formation below each substance, calculate ì¨ for the reaction 2 CH, (g) + 5 o, (g) â 4 CO2 (g) + 2 HO a) 9. AH- (all in kJ/mol) +227 -394286
Patrina SchowalterLv2
1 Apr 2019