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Sati [7]
3 years ago
15

Will a precipitate form (yes or no) when 50.0 ml of 1.2 × 10–3 m pb(no3)2 are added to 50.0 ml of 2.0 × 10–4 m na2s? if so, iden

tify the precipitate.
Chemistry
1 answer:
frez [133]3 years ago
8 0

Answer:

Yes, a precipitate of PbS forms

Explanation:

The equation of the reaction is given as:

                   Pb(NO₃)₂ + Na₂S → PbS + 2NaNO₃

The lead sulfide forms a precipitate in the aqeous solution.

Precipitation is a form of reaction in which ions combines to form a solid precipiate. Most double displacement reactions in which ionic compounds are the reactants results in formation of a precipitate as the product.

There are rules of solubility which guides a reaction that would lead to the formation of a precipitate. The mos applicable of the rules to the reaction stated above is that "carbonates, phosphates, sulfides, oxides and hydroxides are insolube". The sulfide of lead formed in the product is therefore insoluble.

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Which spectroscopic tool would be best for distinguishing a sample of 1,2-dichloropropane from 1,2-dibromopropane?
german

The NMR spectroscopy will be used for distinguishing a sample of 1,2-dichloropropane from 1,2-dibromopropane.

A spectroscopic method for observing the local magnetic fields surrounding atomic nuclei seems to be nuclear magnetic resonance spectroscopy, also referred to as magnetic resonance spectroscopy as well as NMR spectroscopy.

The identification and study of organic molecules benefit greatly from nuclear magnetic resonance (NMR) spectroscopy. This type of spectroscopy has a straightforward underlying theory. Numerous atom types' nuclei behave like small magnets and frequently align themselves in magnetic fields.

Therefore, the NMR spectroscopy will be used for distinguishing a sample of 1,2-dichloropropane from 1,2-dibromopropane.

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4 0
2 years ago
Which deflects winds to the right or left
Naddik [55]

Answer:

right

Explanation:

the air that circulates to the right is deflected, because of the earths gravitational rotation, and how its tilted.

5 0
3 years ago
I need a good picture of the ph scale with acids and bases including all the foods that go on it
Viktor [21]
Does this one help or do you need a different one?

3 0
4 years ago
2. Percent recovery and percent yield are occasionally used as if they are interchangeable terms. They do, however, have differe
Mnenie [13.5K]

Answer:

Answer is in the explanation.

Explanation:

The principal difference between percent recovery and percent yield is that the second involves a chemical reaction whereas the first is more about a purification process.

Thus, percent yield is defined as the ratio between amount of product and theoretical yield.

Percent recovery is the ratio between final amount of purified substance and initial amount of substance.

I hope it helps!

4 0
3 years ago
Calculate the volume of the gas when the pressure of the gas is 1.60 atm at a temperature of 298 K. There are 160. mol of gas in
LekaFEV [45]

Answer:

2445 L

Explanation:

Given:  

Pressure = 1.60 atm

Temperature = 298 K

Volume = ?

n =  160 mol

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 08206 L.atm/K.mol

Applying the equation as:

1.60 atm × V = 160 mol × 0.08206 L.atm/K.mol × 298 K  

<u>⇒V = 2445.39 L</u>

Answer to four significant digits, Volume = 2445 L

6 0
4 years ago
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