Soil Sci Lab (Exercise 1)

Question 1

compounds that contain two different elements

Answer 1

binary compounds

Question 2

A binary compound of a metal and a nonmetal contains?

Answer 2

metallic cation and non-metallic anion

Question 3

How do you name binary compounds?

Answer 3

metal is given first then the non-metal

Ex: NaCl: sodium + chlorine = sodium chloride

Question 4

What are examples of metals?

Answer 4

• Sodium
• Potassium
• Lithium
• Magnesium
• Calcium
• Strontium
• Barium
• Aluminum
• Iron
• Copper
• Zinc
• Silver
• Gold
• Lead
• Tin

Question 5

What are examples of non-metals?

Answer 5

• Hydrogen
• Fluorine
• Chlorine
• Bromine
• Iodine
• Oxygen
• Nitrogen
• Sulfur
• Phosphorus
• Carbon
• Methane

Question 6

Naming Binary Compounds

1. KBr
2. CaO
3. MgCl2
4. Al2O3
5. Na2S

Answer 6

1. Potassium bromide
2. Calcium oxide
3. Magnesium chloride
4. Aluminum oxide
5. Sodium sulfide

Question 7

True or False

If a compound is in a solution (dissolved in water), the compound is named acid

Answer 7

True

Question 8

Naming Binary Compounds: Two Nonmetals

1. CO
2. SF₆
3. PCl₅

Answer 8

1. carbon monoxide
2. sulfur hexaflouride
3. phosphorus pentachloride

Question 9

Naming Binary Compounds: Not Hydrogen

1. CCl4
2. NO2
3. P2O5
4. PCl3
5. CO2

Answer 9

1. carbon tetrachloride
2. nitrogen dioxide
3. diphosphorus pentoxide
4. phosphorus trichloride
5. carbon dioxide

Question 10

Compounds containing three elements

Answer 10

ternary compounds

Question 11

Ionic ternary compounds are formed by the combination of a ____ with a ____

Answer 11

monoatomic cation and polyatomic anion or v/v

Question 12

True or False

Naming ternary compounds is the same with binary ionic compounds anion first before the cation

Answer 12

False

cation first before the anion

Question 13

Naming ternary compounds

1. NaNO3
2. NH4Cl
3. Fe(OH)3

Answer 13

1. sodium nitrate
2. ammonium chloride
3. ferric hydroxide

Question 14

Naming Oxyacids (Acids with Hydrogen + a Polyatomic Ion)

1. H₃PO₄
2. H₂SO₄
3. H₃PO₃
4. H₂SO₃

Answer 14

1. phosphoric acid
2. sulfuric acid
3. phosphorous acid
4. sulfurous acid

Question 15

1. (NH₄)₂SO₄
2. NaNO₃
3. CaCO₃
4. Al(OH)₃
5. Mg₃(PO₄)₂

Answer 15

1. ammonium sulfate
2. sodium nitrate
3. calcium carbonate
4. aluminum hydroxide
5. magnesium phosphate

Question 16

the counting unit used by chemists to indicate the number of atoms, ions, molecules, or formula units present in a chemical sample.

Answer 16

mole

Question 17

Tells you the mass of one mole of substance. In other words, it tells you the number of grams per mole of a compound

Answer 17

molar mass

Question 18

equal to the combining value of an arbitrarily fixed quantity of another substance in a particular reaction.

Answer 18

equivalent weight

Question 19

Formula

Equivalent weight

Answer 19

Equivalent Weight = 𝑚𝑜𝑙𝑎𝑟 𝑚𝑎𝑠𝑠/𝑛−𝑓𝑎𝑐𝑡𝑜r

Question 20

What are the n-factors of the following:
1. HCl
2. Ca(OH)₂

Answer 20

1. 1
2. 2

Question 21

The percent mass contribution of an element in a given compound

Answer 21

mass percentage

Question 22

Formula

%𝑚𝑜𝑖𝑠𝑡𝑢𝑟𝑒 𝑐𝑜𝑛𝑡𝑒𝑛t

Answer 22

• %𝑚𝑜𝑖𝑠𝑡𝑢𝑟𝑒 𝑐𝑜𝑛𝑡𝑒𝑛𝑡 = 𝑚𝑎𝑠𝑠 𝑜𝑓 𝑤𝑎𝑡𝑒𝑟 𝑖𝑛 𝑠𝑎𝑚𝑝𝑙𝑒/𝑚𝑎𝑠𝑠 𝑜𝑓 𝑑𝑟𝑦 𝑠𝑜𝑖𝑙 x 100
• %𝑚𝑜𝑖𝑠𝑡𝑢𝑟𝑒 𝑐𝑜𝑛𝑡𝑒𝑛𝑡 = 𝐹𝑊𝑠𝑜𝑖𝑙 − 𝑂𝐷𝑊𝑠𝑜𝑖𝑙/𝑂𝐷𝑊𝑠𝑜𝑖𝑙 x 100

Question 23

Formula

FW

Answer 23

FW = ODW x (1 + 𝑀𝐶/100)

Question 24

Formula

ODW

Answer 24

ODW = 𝐹𝑊/(1+ 𝑀𝐶/100 )