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Natalija [7]
4 years ago
9

What test reagent used in this experiment will distinguish a soluble cl- salt from so42- salt? what is the distinguishing observ

ation?
Chemistry
1 answer:
storchak [24]4 years ago
8 0

The two ions to be distinguished are : Chloride ion and sulphate ion

The chloride ion can be identified by addition of silver nitrate to the solution containing chloride ion

On addition of silver nitrate, chloride ion will react with silver ions to form a white precipitate of silver chloride

The reaction is

Ag+ (a)  + Cl-(aq)  ---> AgCl(s)

the solution containing sulphate ion can be identified by adding barium chloride

Ba+2  + SO4^-2   ----> BaSO4(s), white ppt

thus barium chloride reacts with sulphate ion to form white ppt



You might be interested in
Consider the total ionic equation below.
ZanzabumX [31]

Answer:

\boxed{\text{Ba}^{2+}}

Explanation:

\rm 2H^{+} + CrO_{2}^{3-} + \textbf{Ba}^{2+} + 2OH^{-} \longrightarrow \textbf{Ba}^{2+} + CrO_{2}^{4-} + 2H_{2}O

The spectator ions are the ions that are on both sides of the equation.

\text{In this equation, the spectator ions are }\boxed{\textbf{Ba}^{2+}}.

They are present at the beginning and at the end of the reaction. They don't take part in the reaction. They are simply "spectators" watching the other ions "do their thing."

3 0
3 years ago
Determine the volume (in ml) of a 3.57 M solution of Zi Bry that contains 0.884 moles of ZnBr2
frosja888 [35]

Answer:

The  volume (in ml) of a 3.57 M solution of ZnBr_2 that contains 0.884 moles of  ZnBr_2 is 247.61g mL

Explanation:

According to the definition of Molarity

which sates

"The amount of moles of a substance present in one litre of the solution is called as Molarity."

3.57M ZnBr_2 solution implies that 1000 mL of the solution conatins 3.57Moles of ZnBr_2

Hence , 3.57 moles of ZnBr_2 is present in the 1000 ml of solution

Now,

In 1 mole of ZnBr_2 is  present in the =\frac{1000}{3.57}ml of solution

Similarily ,

In 0.884  moles ofZnBr_2 is  present in the \frac{1000\times 0.884}{3.57} of solution= 247.61g mL

5 0
3 years ago
What are 7 elements from the periodic table that are named after objects in outer space?
Alik [6]
Elements named after celestial bodies are the following. 1.Element 34 (Selenium) is named after the moon. Selene is Greek for moon 2. Element 2 (Helium) is named after the sun. Helios is Greek for sun. 3. Element 52 (Tellurium) is named after the earth. Tellus is the Latin word for earth. 4. Element 80 (Mercury) is named after the planet Mercury. The name Mercury is also a name of a Roman god. 5. Element 92 (Uranium) is named after the planet Uranus. 6. Element 93 (Neptunium) is named after the planet Neptune. 7. Element 94 (Plutonium) is named after the planet Pluto.
8 0
3 years ago
Nitrous oxide (N2O) is used as an anesthetic (laughing gas) and in aerosol cans to produce whipped cream. It is also a potent gr
scZoUnD [109]

Answer:

five half lives

Explanation:

Half-life is the time required for a quantity to reduce to half of its initial value.

How many half lives it would take to reach 3.13% form 100% of it's initial concentration:

100% - 50% : First Half life

50% - 25%: Second Half life

25% - 12.5%: Third Half life

12.5% - 6.25%: Fourth Half life

6.25% - 3.125%: Fifth Half life

This means it would take five half lives to get to 3.125% (≈ 3.13%) of it's original concentration.

3 0
3 years ago
(science)
ra1l [238]

Answer:

b. . the element symbol

6 0
3 years ago
Read 2 more answers
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