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Chapter 3: 3.53P (page 133)

Write balanced equations for each of the following by inserting the correct coefficients in the blanks:

  1. _SO2(g)+_O2(g)鈫�_SO3(g)
  2. _Sc2O3(s)+_H2O(l)鈫�_Sc(OH)3(s)
  3. _H3PO4(aq)+_NaOH(aq)鈫�_Na2HPO4(aq)+_H2O(l)
  4. _C6H10O2(s)+_O2(g)鈫�_CO2(g)+_H2O(g)

Short Answer

Expert verified
  1. 2SO2g+O2g鈫�2SO3g
  2. Sc2O3s+3H2Ol鈫�2ScOH3s
  3. H3PO4aq+2NaOHaq鈫�Na2HPO4aq+2H2Oaq
  4. C6H10O5s+6O2g鈫�6CO2g+5H2Og

Step by step solution

01

Step1. Considering the following chemical equations:

Balancing all atoms other than H and O, after that balanced O and H Then checked overall equation is balanced or not.

For balancing the equation we chose firstly the most complicated looking molecule in the equation. For example C6H10O5.

02

Step2. The final balanced reaction:

  1. 2SO2g+O2g鈫�2SO3g
  2. Sc2O3s+3H2Ol鈫�2ScOH3s
  3. H3PO4aq+2NaOHaq鈫�Na2HPO4aq+2H2Ol
  4. C6H10O5s+6O2g鈫�6CO2g+5H2Og

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Most popular questions from this chapter

Hemoglobin is 6.0% heme (C34H32FeN4O4) by mass. To remove the heme, hemoglobin is treated with acetic acid and NaCl to form hemin (C34H32N4O4FeCl). At a crime scene, a blood sample contains 0.65 g of hemoglobin. (a) How many grams of heme are in the sample? (b) How many moles of heme? (c) How many grams of Fe? (d) How many grams of hemin could be formed for a forensic chemist to measure?

Each of the following balances weighs the indicated numbers of atoms of two elements:

Which element-left, right, or neither,
(a) Has the higher molar mass?
(b) Has more atoms per gram?
(c) Has fewer atoms per gram?
(d) Has more atoms per mole?

Question. In the process of balancing the equation

Al+Cl2鈫�AlCl3

Student I writes:Al+Cl2鈫�AlCl2

Student II writes:Al+Cl2+Cl鈫�AlCl3

Student III writes:2Al+3Cl2鈫�2AlCl3

Is the approach of Student I valid? Student II? Student III? Explain.

Cocaine (C17H21O4N) is a natural substance found in coca leaves, which have been used for centuries as a local anesthetic and stimulant. Illegal cocaine arrives in the United States either as the pure compound or as the hydrochloride salt (C17H21O4NHCl). At 25oC, the salt is very soluble in water (2.50 kg/L), but cocaine is much less so (1.70 g/L). (a) What is the maximum amount (in g) of the salt that can dissolve in 50.0 mL of water? (b) If the solution in part (a) is treated with NaOH, the salt is converted to cocaine. How much additional water (in L) is needed to dissolve it?

Calculate each of the following quantities:
(a) Mass in grams of 0.68 mol of KMnO4
(b) Moles of O atoms in 8.18 g of Ba(NO3)2
(c) Number of O atoms in 7.3脳10-3gof CaSO42H2O

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