1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ronch [10]
3 years ago
10

A common car battery consists of six identical cells each of which carries out the reaction: Pb + PbO2 + 2HSO4- + 2H+ → 2PbSO4 +

2H2O Suppose that in starting a car on a cold morning a current of 350 amperes is drawn for 12.2 seconds from a cell of the type described above. How many grams of Pb would be consumed? (The atomic weight of Pb is 207.19.)
Chemistry
1 answer:
docker41 [41]3 years ago
6 0

Answer:

The correct answer is 4.58 grams.

Explanation:

Based on the Faraday's law of electrolysis, at the time of electrolysis, the amount of deposited substance is directly equivalent to the concentration of the flow of charge all through the solution. If current, I, is passed for time, t, seconds and w is the concentration of the substance deposited, then w is directly proportional to I*t or w = zIt (Here z refers to the electrochemical equivalent or the amount deposited when 1 C is passed).  

For the reaction, n * 96500 C = molar mass

1C = molar mass/n*96500 = Equivalent wt / 96500

w = Equivalent wt / 96500 * I * t

In the given reaction,  

Pb + PbO2 + 2HSO4- + 2H+ → 2PbSO4 + 2H2O, n = 2, the current or I drawn is 350 A, for time, t 12.2 seconds.  

Now putting the values in the equation we get,  

w = 207.19 / 2 * 96500 * 350 * 12.2 ( The molecular weight of Pb is 207.19 and the equivalent weight of Pb is 207.19 / 2)

w = 4.58 gm.  

You might be interested in
Will made a cup of hot tea and placed it on the tableA few minutes later, he picked up the cup and touched the warm table where
aliina [53]
D. Because convection is the transfer of heat and because the heat from the cup was transferred on to the table it has to be d :)
6 0
3 years ago
During every chemical reaction, _____.
never [62]
I believe new substances are formed
hope this helps!
3 0
3 years ago
In order to have a positive charge, an atom must have ________. In order to have a positive charge, an atom must have ________.
son4ous [18]

Answer:

C

Explanation:

The charge on an atom depends on the number of protons and electrons present in it. The protons in an atom are positively charged while electrons have a negative charge. For a neutral atom, the number of protons balances the number of electrons. for a negatively charged atom, the number of electrons is more than the number of protons. for a positively charged atom , the number of protons are more than the number of electrons.

6 0
3 years ago
ASAP WHAT ARE THE ANSWERS FOR 3,4,5,6
storchak [24]
3 should be B hop this helps
3 0
3 years ago
Read 2 more answers
Carbon, nitrogen, and water are recycled through ecosystems many times.
notsponge [240]
What is the question? Because that’s true
3 0
3 years ago
Other questions:
  • The isomerization of methylisonitrile to acetonitrile CH3NC(g) → CH3CN(g) is first order in CH3NC. The rate constant for the rea
    10·1 answer
  • How many neutrons are found in a stable isotope of uranium-235?
    12·1 answer
  • Red or irritated eyes and skin, choking, vomiting, convulsions or seizures, pinpoint pupils may be symptoms of what type of CBRN
    8·1 answer
  • Why Aluminium Oxide has higher melting point than Alumunium Chloride? Try to mentioned about ionic compound.
    14·1 answer
  • What scale do we use to measure how acid or alkali something is
    7·1 answer
  • A sample of an ideal gas at 1.00 atm and a volume of 1.50 L was placed in a weighted balloon and dropped into the ocean. As the
    14·1 answer
  • The azide ion, n−3, is a symmetrical ion, all of whose contributing structures have formal charges. draw three important contrib
    11·1 answer
  • 8. Which type of bond results when one or more valence
    9·1 answer
  • The electron configuration of an element is 1s22s22p63s1 Describe what most likely happens when an atom of this element comes ne
    11·1 answer
  • In 6 months time, the Earth will revolve to the other side of the sun. During the June Solstice, the most
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!