Chemistry, 25.07.2019 07:00 naseersaad

Balance the redox reaction below in acidic solution. pbo2(s) + i-(aq) pb2+(aq) + i2(s) when balanced what is the sum of all the coefficients?

Answers: 1

Show answers

Answers

Answer from: bettybales1986

Two Half Cell reactions are as,

Reduction: PbO₂ + 2e⁻   → Pb²⁺

As it is acidic medium reaction, so add H⁺ on reactant side as it has more number of oxygen atoms and add H₂O on product side, and balance tehe elements, So,
   4 H⁺ + PbO₂ + 2e⁻   → Pb²⁺ + 2 H₂O (1)

Oxidation: I⁻ → I₂ + 1e⁻

Balance Number of elements along with electrons,

2 I⁻ → I₂ + 2e⁻ (2)

Compare eq. 1 and 2,

4 H⁺ + PbO₂ + 2e⁻   → Pb²⁺ +   2 H₂O

2 I⁻ → I₂ + 2e⁻
  ⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻
PbO₂ + 2 I⁻ + 4 H⁺    →    Pb²⁺ + I₂ + 2H₂O

Number of Coefficients = 11

Answer from: Quest

-be a crystalline solid

- be soluble in water

-conduct electricity

hope this : )

Answer from: Quest

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is $1s^{2}2s^{2}2p^{6}3s^{1}$ and electronic configuration of phosphorous is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$ .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

$3na + p \rightarrow na_{3}p$

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

Electrons are transferred from atoms of to atoms of this transfer makes the sodium atoms and the

Another question on Chemistry

Chemistry, 22.06.2019 06:00

Find the mass in grams of 1.37x1020 particles of h3po4

Answers: 2

Answer

Chemistry, 22.06.2019 06:00

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

Answers: 3

Answer

Chemistry, 22.06.2019 09:00

Astudent is asked to identify and element that is pale yellow brittle solid and does not conduct electricity. at which location in this periodic table would the element most likely be found?

Answers: 2

Answer

Chemistry, 22.06.2019 11:00

3) in peaches, [oh]=3.16x10-11 m a) find [h+ ] b) what is the ph? c) is the solution acidic, basic, or neutral?

Answers: 1

Answer

You know the right answer?

Balance the redox reaction below in acidic solution. pbo2(s) + i-(aq) pb2+(aq) + i2(s) when balanced...

Questions