General Chemistry

Practice

1.

Provide a balanced chemical equation for the dissociation of each compound:

 

a) Na3PO4,  b) K2CrO4,  c) MgCl2,  d) Al(NO3)3,  e) HNO3,  f) K2SO4,  g) Ca(NO2)2,  h) Mg(C2H3O2)2,  i) Na2CO3,  j) (NH4)2SO4,  k) HClO4,  l) NaHSO3, 

a)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
b)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
c)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
d)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
e)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
f)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
g)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
h)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
i)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
j)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
k)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
l)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
2.

Write balanced complete ionic and net ionic equations for each reaction:

 

a) K2SO4(aq) + CaCl2(aq) →CaSO4(s) + 2KCl(aq)

b) Na2S(aq) + 2HBr(aq) → 2NaBr(aq) + H2S(g)

c) NH4Cl(aq) + KOH(aq) → KaCl(aq) + H2O(l) + NH3(g)

d) Na2CO3(s) + H2SO4(aq) → Na2SO4(aq) + CO2(g)+ H2O(l)

e) AgNO3(aq) + NaI(aq) → Agl(s) + NaNO3(aq)

f) HBr(aq) + KOH(aq) → KBr(aq) + H2O(l)

g) HC2H3O2(aq) + Na2CO3(aq) → NaC2H3O2(aq) + CO2(g) + H2O(l)

h) LiOH(aq) + HC2H3O2(aq) → LiC2H3O2(aq) + H2O(l)

i) HCl(aq) + NH3(aq) → NH4Cl(aq)

j) 2K3PO4(aq) + 3BaCl2(aq) → Ba3(PO4)2(s) + 6KCl(aq)

a)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
b)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
c)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
d)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
e)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
f)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
g)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
h)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
i)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
j)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
3.

Complete and balance each of the following molecular equations in aqueous solution:

 

a) AgNO3(aq) + CaCl2(aq) →

b) HNO3(aq) + Na2CO3(aq) →

c) K2CO3(s) + HClO3(aq) →

d) Al(OH)3(s) + HBr(aq) →

e) H3PO4(aq) + Fe(OH)3(s) →

f) BaCl2(aq) + K2SO4(aq) →

a)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
b)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
c)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
d)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
e)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
f)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
4.

Calculate the molarity of each ion in the following solutions:

 

a) 0.150 M NaNO3
b) 0.250 M K2SO4
c) 0.280 M Ca(NO3)2
d) 0.350 M AlCl3

a)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
b)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
c)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
d)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
5.

Which solution contains more chloride ions assuming complete solubility of salts?

 

a) 0.140 M NaCl or 0.060 M AlCl3
b) 0.250 M BaCl2 or 0.250 M MgCl2
c) 0.250 M MgCl2 or 0.450 M KCl

a)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
b)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
c)
answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
6.

How many ml of 1.80 M MgBr2 is necessary to precipitate all the silver ions in 600.0 mL of 0.80 M AgNO3 solution?

answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
7.

How many ml of 2.70 M K2SO4 is required to precipitate all the barium ions in 500. mL of 0.650 M BaCl2 solution?

answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
8.

27.0 mL of a NaOH solution was needed to neutralize 0.326 g of KHP (KHC8H4O4). What is the molarity of the NaOH solution?

answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
9.

What volume of 0.150 M calcium hydroxide is required to neutralize 250.0 mL of 0.0350 M sulfuric acid?

answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
10.

How many mL of 0.250 M HCl will neutralize 60.00 mL of 0.060 M Ba(OH)2?

answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
11.

What is the mass in grams of AgCl precipitate if 20.0 mL of 0.150 M AgNO3 is added to 45.0 mL of 0.250 M MgCl2?

answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
12.

How many mL of 0.600 M K2SO4 was added to 400.0 mL of 0.500 M BaCl2 solution if 31.2 g of precipitate was collected?

answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
13.

When a 42.0-mL sample of a 0.85 M sodium chloride solution is mixed with 17.0 mL of a 0.650 M lead(II) nitrate solution, 2.45 g of a precipitate is formed:

2NaCl(aq) + Pb(NO3)2(aq) → PbCl2(s) + 2NaNO3(aq)

What are the theoretical and the percent yields of the reaction?

answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
14.

A 4.598-g sample of acetylsalicylic acid (the active ingredient in aspirin) was dissolved in water. It took 35.6 mL of a 0.717 M NaOH solution to neutralize the acid. Determine the molar mass of the acid considering that it is a monoprotic acid.

answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
15.

A student prepared a solution by dissolving 2.40-g mixture of calcium nitrate and calcium chloride. To this, a solution of silver nitrate was added dropwise until the mass of the precipitate stayed constant at 0.584 g. Determine the mass percent of calcium nitrate in the mixture.

answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
Solution
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
16.

Determine the products and calculate the mass of the precipitate that is formed after 177.2 mL of a 1.25 M Na2CrO4(aq) solution is mixed with 250 mL of a 1.25 M AgNO3(aq) solution.

AgNO3(aq) + Na2CrO4(aq) →

answer
The answers and solutions to practice problems are available to registered users only. Click here to Register!  
video
The answers and solutions to practice problems are available to registered users only. Click here to Register!  

Leave a Comment

1675347304