Amit

Write a balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients.

a) A precipitate forms when aqueous solutions of chromium(III) iodide and lead(II) nitrate are combined. (include states such as (s) or (aq).)

b) A precipitate forms when aqueous solutions of chromium(II) chloride and sodium hydroxide are combined. (include states such as (s) or (aq).)

c) A precipitate forms when aqueous solutions of calcium chloride and sodium phosphate are combined. (include states such as (s) or (aq).)

1. Write a net ionic equation for the reaction that occurs when excess aqueous hydrobromic acid is combined with solid cobalt(II) carbonate.

(specify states such as (aq) or (s).)

2. Write a balanced equation for the precipitation reaction that occurs when aqueous solutions of cobalt(II) sulfate and potassium phosphate are combined.

(specify states such as (aq) or (s).)

3. Write the net ionic equation for the precipitation reaction that occurs when aqueous solutions of copper(II) bromide and sodium phosphate are combined.

(specify states such as (aq) or (s).)

4. Write a net ionic equation for the overall reaction that occurs when aqueous solutions of sulfurous acid (H2SO3) and sodium hydroxide are combined.

(specify states such as (aq) or (s).)

a) The compound iron(II) iodide is a strong electrolyte. Write the transformation that occurs when solid iron(II)

(specify states such as (aq) or (s).)

b) The compound calcium iodide is a strong electrolyte. Write the transformation that occurs when solid calcium iodide dissolves in water.

(specify states such as (aq) or (s).)

c) The compound copper(II) nitrate is a strong electrolyte. Write the transformation that occurs when solid copper(II) nitrate dissolves in water.

(specify states such as (aq) or (s).)

Acid-base reaction is also called a neutralization reaction. If 25.50 mL of 0.500 M H2SO4 solution is used to neutralize 57.40 mL of NaOH solution, calculate the concentration of the original NaOH solution.

NaOH(aq) + H2SO4(aq) => Na2SO4(aq) + H2O(l) (not balanced)

a) 0.444 M

b) 0.454 M

c) 0.555 M

d) 0.467 M

e) 0.511 M

It takes 11.2 kJ of energy to raise the temperature of 145 g of benzene from 23.0 oC to 68.0 oC. What is the specific heat of benzene?

1.72 J/(g oC)

5.25 J/(g oC)

1.14 J/(g oC)

3.48 J/(g oC)

Identify a driving force in the following reaction:

HCl (aq) + Na2CO3(aq) => ________ + _______ + _______

a) There is no driving force. This reaction will not occur.

b) Formation of a precipitate

c) Formation of a nonelectrolyte

d) Formation of an insoluble salt

e) More than one correct answer is given.