32. and powdered aluminum can react with great of to form molten iron and Alon W

Question

32. and powdered aluminum can react with great of to form molten iron and Alon When this reaction equation is balanced, what are the heat Fezo, Al, Fe, AlzO? stoichiometric coefficients in the following order a. 1, 1, 1, 1 b. 2, 2, 2, 2 d 2.1, 1.2 33. 1, 2, 2, 1 e. 1, 1, 2,2 Air bags in cars sodium inflate when an electrical spark activates sodium azide oNaN), so that it decomposes to each metal and nitrogen gas. In the balanced reaction equation, how many moles N, gas are formed for mole of NaN,? of e, 2.5 34. Sulfur dioxide from coal-fired power plants combines with water in the atmosphere to produce acid rain What is the product when one molecule of SO, reacts with one molecule of water? a. two molecules of sulfurous acid d, one molecule of sulfuric acid b, one sulfate ion e, one molecule of sulfurous acid c. two sulfite ions 35. The acid-base reaction betw een phosphoric acid, H,PO. and calcium hydroxide. CaoH., yields water and calcium phosphate. For each mole of calcium phosphate produced by this reaction, how many moles of water are produced? consumed when one mole of this allotrope burns to make sulfur trioxide? d. 18 37. In an aqueous solution under basic conditions, ozone (o,)reacts with iodide ()and water to form iodine hydroxide (OH and oxygen (O). What is the sum of the chiometric coefficients in the balanced reaction d. 12 10 to the following balanced reaction. What 38. Sulfuric acid reacts with a vanadium oxide compound according unl are the coefficients in the balanced chemical equation in the order in which it is written? d 3, 2, 2,6 e, 6, 3, 3, 12 a. 3, 1, 1, 3 b. 3, 2, 3, 3 c. 3, 1, 1, 6

Explanation / Answer

33.

b. is correct option

2NaN3 (s) --------à Na(s) + 3N2 (g)

2 moles of NaN3 produce 3 moles of N2

1 moles of NaN3 produce 3 /2 moles of N2 = 1.5 moles of N2

34.

e. is correct option

SO2 + H2O-----àH2SO3

1molecule of SO2 and 1 molecule of water make 1 molecule of H2SO3. To make H2SO4 , SO2 must be oxidized to form SO3, Sulphur trioxide

35. e. is correct option

3 Ca(OH)2 + 2 H3PO4 -----> Ca3(PO4)2 + 6 H2O

For each mole of calcium phosphate produced by this reaction 6 moles of water are produced.

36.

a. is correct option

37.

b. is correct option

33.

b. is correct option

2NaN3 (s) --------à Na(s) + 3N2 (g)

2 moles of NaN3 produce 3 moles of N2

1 moles of NaN3 produce 3 /2 moles of N2 = 1.5 moles of N2

34.

e. is correct option

SO2 + H2O-----àH2SO3

1molecule of SO2 and 1 molecule of water make 1 molecule of H2SO3. To make H2SO4 , SO2 must be oxidized to form SO3, Sulphur trioxide

35. e. is correct option

3 Ca(OH)2 + 2 H3PO4 -----> Ca3(PO4)2 + 6 H2O

For each mole of calcium phosphate produced by this reaction 6 moles of water are produced.

36.

a. is correct option

37.

b. is correct option

33.

b. is correct option

2NaN3 (s) --------à Na(s) + 3N2 (g)

2 moles of NaN3 produce 3 moles of N2

1 moles of NaN3 produce 3 /2 moles of N2 = 1.5 moles of N2

34.

e. is correct option

SO2 + H2O-----àH2SO3

1molecule of SO2 and 1 molecule of water make 1 molecule of H2SO3. To make H2SO4 , SO2 must be oxidized to form SO3, Sulphur trioxide

35. e. is correct option

3 Ca(OH)2 + 2 H3PO4 -----> Ca3(PO4)2 + 6 H2O

For each mole of calcium phosphate produced by this reaction 6 moles of water are produced.

36.

a. is correct option

37.

b. is correct option

33.

b. is correct option

2NaN3 (s) --------à Na(s) + 3N2 (g)

2 moles of NaN3 produce 3 moles of N2

1 moles of NaN3 produce 3 /2 moles of N2 = 1.5 moles of N2

34.

e. is correct option

SO2 + H2O-----àH2SO3

1molecule of SO2 and 1 molecule of water make 1 molecule of H2SO3. To make H2SO4 , SO2 must be oxidized to form SO3, Sulphur trioxide

35. e. is correct option

3 Ca(OH)2 + 2 H3PO4 -----> Ca3(PO4)2 + 6 H2O

For each mole of calcium phosphate produced by this reaction 6 moles of water are produced.

36.

a. is correct option

37.

b. is correct option

33.

b. is correct option

2NaN3 (s) --------à Na(s) + 3N2 (g)

2 moles of NaN3 produce 3 moles of N2

1 moles of NaN3 produce 3 /2 moles of N2 = 1.5 moles of N2

34.

e. is correct option

SO2 + H2O-----àH2SO3

1molecule of SO2 and 1 molecule of water make 1 molecule of H2SO3. To make H2SO4 , SO2 must be oxidized to form SO3, Sulphur trioxide

35. e. is correct option

3 Ca(OH)2 + 2 H3PO4 -----> Ca3(PO4)2 + 6 H2O

For each mole of calcium phosphate produced by this reaction 6 moles of water are produced.

36.

a. is correct option

37.

b. is correct option

32.

c. is correct option

Fe2O3(s) + 2 Al(s)---- 2 Fe(l) + Al2O3(s)

1 mol of Fe2O3 reacts with 2 moles of Al to produce 2 moles of Fe and 1 mol of Al2O3. So the stoichiometric coefficients are in 1,2,2,1 order.

33.

b. is correct option

2NaN3 (s) --------à Na(s) + 3N2 (g)

2 moles of NaN3 produce 3 moles of N2

1 moles of NaN3 produce 3 /2 moles of N2 = 1.5 moles of N2

34.

e. is correct option

SO2 + H2O-----àH2SO3

1molecule of SO2 and 1 molecule of water make 1 molecule of H2SO3. To make H2SO4 , SO2 must be oxidized to form SO3, Sulphur trioxide

35. e. is correct option

3 Ca(OH)2 + 2 H3PO4 -----> Ca3(PO4)2 + 6 H2O

For each mole of calcium phosphate produced by this reaction 6 moles of water are produced.

36.

a. is correct option

37.

b. is correct option

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