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
Genrish500 [490]
3 years ago
11

In the lead storage battery, what are the charges on the lead species that are reactants or products in reactions that take plac

e at the anode and cathode?
A) 2+ and 4+
B) 0 and 2+
C) 0 and 4+
D) 0, 2+ and 4+
E) 0, 2+ 3+ and 4+
Chemistry
1 answer:
Aleksandr-060686 [28]3 years ago
5 0

Answer:

D) 0, 2+ and 4+

Explanation:

Lead storage battery consists of metallic lead and lead(IV)oxide in a bath of sulphuric acid.

The negative plate (Cathode) consists of metallic lead in the battery while the positive plate (Anode) consists of Lead(IV)Oxide (PbO2). The liquid in which these plates are suspended in is an aqueous medium of Sulphuric acid (H2SO4).

Negative plate reaction: Pb(s) + HSO4–(aq) → PbSO4(s) + H+(aq) + 2e–

Positive plate reaction: PbO2(s) + HSO4–(aq) + 3H+(aq) + 2e– → PbSO4(s) + 2H2O(l)

Combining these two reactions, one can determine the overall reaction:

Pb(s) + PbO2(s) + 2H+(aq) + 2HSO4–(aq) → 2PbSO4(s) + 2H2O(l)

Pb is in 0 valent state. PbO2 has Pb with 4+ valency. PbSO4 has Pb with 2+ valency.

You might be interested in
This number tells you the number of each type of atom in a compound.
KonstantinChe [14]

Answer:

avogadro's constant

Explanation:

this is the fixed number of the atoms in the molecule of an element

avogadro's law states that equal volumes of gases<em> </em><em>at</em><em> </em><em>the</em><em> </em><em>same</em><em> </em><em>temperature</em><em> </em><em>and</em><em> </em><em>pressure</em><em> </em><em> </em><em>contain</em><em> </em><em>equal</em><em> </em><em>numbers</em><em> </em><em>of</em><em> </em><em>molecules</em><em> </em>

<em>that</em><em> </em><em>is</em><em> </em><em>all</em><em> </em><em>gases</em><em> </em><em>with</em><em> </em><em>same</em><em> </em><em>temperature</em><em> </em><em>and</em><em> </em><em>pressure</em><em> </em><em>will</em><em> </em><em>always</em><em> </em><em>have</em><em> </em><em>equal</em><em> </em><em>numbers</em><em> </em><em>of</em><em> </em><em>molecules</em><em> </em>

7 0
3 years ago
If the percent by volume is 2.0% and the volume of solution is 250 mL, what is the volume of solute in solution? Show your work.
Mrrafil [7]
Volume of solute = 250 * 2%
= 250 * 0.02
= 5

In short, Your Answer would be 5 mL

Hope this helps!
3 0
3 years ago
What is the new pressure if the temperature outside is 296k and his weight causes the tire's volume to drop to 2.0 liters
sukhopar [10]

Question:

At standard temperature and pressure, the volume of a tire is 3.5L. What is the new pressure if the temperature outside is 296k and its weight causes the volume of the gas is 2.0 L?

Answer:

The new pressure is: 1.896 atm

Explanation:

At standard temperature and pressure, we have:

P_1 = 1atm

T_1 = 273.15k

V_1 = 3.5L

Outside, we have:

T_2 = 296k

V_2 = 2.0L

Required

Determine the new pressure

Using combined gas law, we have:

\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}

This gives:

\frac{1 * 3.5}{273.15} =\frac{P_2*2.0}{296}

Solve for P_2

P_2 = \frac{296 * 1 * 3.5}{273.15*2.0}

P_2 = \frac{1036}{546.30}

P_2 \approx 1.896 atm

7 0
3 years ago
When using a dichotomous key to identify organisms what do we look at
Inga [223]

Answer:

a. physical features

Explanation:

google

{and my biology teacher is <u><em>awesome</em></u> ❌}  

3 0
3 years ago
What inner planet has enough gravity to hold on to all its gases
Viefleur [7K]
The earth has enough gravity to do that
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of these is an example of a chemical reaction that occurs at a very slow rate
    13·1 answer
  • Calculate the volume in mL of a 0.708 M KOH solution containing 0.098 mol of solute
    5·1 answer
  • 1. AA, AAA, C and D cells all deliver the same voltage( 1.5V) when the batteries are fully charged. However,as the size of the b
    5·1 answer
  • Why does it take so much heat and pressure to create helium and other elements?
    12·1 answer
  • I need help writing a Christmas story about electricity
    12·1 answer
  • In which molecule is hydrogen bonding most important?
    13·1 answer
  • 1. How much heat is required to melt 25.0 g of ice at 0°C?
    9·1 answer
  • Technetium-99 is an ideal radioisotope for scanning organs because it has a half-life of 6.0 h and is a pure gamma emitter. supp
    11·1 answer
  • What is the engine piston displacement in liters of an engine who’s displacement is listed as 430 in.²
    11·1 answer
  • Calcium dihydrogen phosphate, Ca(H₂PO₄)₂, and sodium hydrogen carbonate, NaHCO₃, are ingredients of baking powder that react to
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!