exam 2 problems

exam 2 problems - 0.200 M Pb(NO 3 ) 2 is reacted with 150.0...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
1. Write the molecular, total ionic, and net ionic equations for the following reactions: a) Li 3 P (aq) + Ca(ClO 2 ) 2 (aq) b) H 2 S (aq) + Fe(NO 3 ) 3 (aq) 2. One way to analyze the amount of vitamin C, C 6 H 8 O 6, in a sample is to titrate it with dichromate. Balance this redox reaction, which takes place in acidic solution: Cr 2 O 7 2-(aq) + C 6 H 8 O 6 (aq) C 6 H 8 O 7 (aq) + Cr 3+( aq) in acidic solution. What was reduced? What was oxidized? Oxidizing agent? Reducing agent? What is the oxidation state of carbon in vitamin C? _______ of Cr in Cr 2 O 7 2- ? ______ How many electrons are transferred in this reaction? 3. 20.0 mL of a 2.0M sodium chloride solution is diluted to a volume of 60.0 mL It’s new concentration is __________. 4. Draw a pictures of a) MgCl 2 (aq) b) HNO 3 (aq) and c) HF(aq) 5. The products of the reaction of sodium carbonate and hydrochloric acid are: The products of the reaction of ammonium chloride and potassium hydroxide: 6. What mass of solid lead (II) chloride can be produced when 50.0 mL of
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 0.200 M Pb(NO 3 ) 2 is reacted with 150.0 mL of HCl(g) at 755 torr and 35 o C? 7 . Calculate the mole fraction and the molarity of glucose (C 6 H 12 O 6 ) in an aqueous glucose solution that is 2.3 m. The density of this solution is 1.007 g/mL. 8. 0.250 g of a binary unknown acid, HX, requires 31.96 mL of a 0.09668M NaOH solution when titrated. What is the identity of the unknown acid? 9. A 1.00 g sample of a metal X (that is known to form X 2+ ions) was added to 0.100 liters of 0.500 M H2SO4. After all the metal had reacted, the remaining acid required 0.0334 liters of 0.500 M NaOH solution for neutralization. Calculate the molar mass of the metal . 10. The following redox reaction takes place in basic solution. AlO 2-( aq ) + PO 3 3- ( aq ) HPO 4 2-( aq ) + Al (s) How many g of a 0.45% NaAlO 2 solution would be required to titrate 3.0 mL of 0.10M sodium phosphite? Answers: 6) 0.819g 7) 0.040; 1.6M 8) HBr 9) 24 g/mol 10) 4.7 g...
View Full Document

This note was uploaded on 01/17/2012 for the course CHEM 4A taught by Professor Apriladrian during the Spring '11 term at UC Merced.

Ask a homework question - tutors are online