Did Pb2+ react with KI? Yes or No? State the reason of your answer.

Answers

Answer 1

Answer: Yes, Pb2+ react with KI.

Pb2+ is lead (II) ion
KI is a compound. It is a combination of potassium (K) and iodine (I). It is called potassium iodide.

Both potassium and iodine are highly reactive elements. Thus, when they are combined with another element like Pb2+, Pb2+ reacts with KI

Answer 2

Answer:

Answer: Yes, lead ion will react with potassium iodide.

Explanation: When lead ion reacts with KI, a bright yellow colored precipitate is formed.

The reaction of these two follows:

$Pb^(2+)(aq.)+2KI(aq.)\rightarrow PbI_2(s)+2K^+(aq.)$

Hence, $Pb^(2+)$ ion reacts with KI to yield $PbI_2$

This test is the confirmatory test for lead ion which is present in Group I.

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Electrons orbit around the nucleus of atoms in allowed energy states. This is the basis of the theory of which scientist?A. John Dalton
B. Niels Bohr
C. Albert Einstein

Answers

Option B. Niels Bohr's model.

The electrons used in bonding are known as a. bonding electrons
b. proton
c. neutron
d.moron

Answers

Answer:

bonding electron

Explanation:

because they will bond together.

What is the mass percent of oxygen in sodium bicarbonate (NaHCO3)?19.04%

27.37%

38.09%

57.13%

Answers

Na- 11=22

H-1 =1

C-12=12

O3=16*3 =48

total = 22+1+12+48 = 83

83-----> 48

100-----> 100*48/83=57.83 = 57.13 is nearest answer

How many unpaired electrons does calcium have

Answers

Answer:

Explanation:

The number of unpaired electrons in is 0

Answer:

4 unpaired electrons

Explanation:

becausd it have 4 unpaired electros it is paramagnetic

When oxygen bonds to itself to form breathable oxygen gas what kind of bond is involved?a. ionic
b. covalent
c. oxygenated
d. non-metallic

Answers

The correcr anwer is B. The chemical bond between two oxygen atoms is a covalent bond, specifically double covalent bond. The two atoms share two pairs of electrons in order to achieve the most stable structure. Other examples are CO2 and C2H4.

ANALOGY: Evaporates are to chemical sedimentary as dead fish are to clastic sedimentary.

Answers

Your answer will be false.

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