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8090 [49]
2 years ago
6

Which aqueous solution has a freezing point closer to its predicted value, 0.01 m NaBr or 0.01 m MgCl₂? Explain

Chemistry
1 answer:
emmasim [6.3K]2 years ago
4 0

NaBr will behave more ideally and have an actual freezing point closer to its predicted (theoretical) value.

<h3>What is freezing point?</h3>

The temperature at which a liquid turns into a solid under normal air pressure is known as the freezing point.

NaBr in water dissociates to Na^{+} and Br^{-} (two particles) while MgCl_{2}​ dissociating to Mg^{2+} two Br^{-}(three particles). There is a difference between a theoretical boiling/freezing point and an experimentally determined one and the primary cause of this phenomenon is the formation of positive ions on top of negative ones and vice versa, creating an ionic environment with a net opposite charge.

In such a setting we can conclude univalent ions will behave more ideally (bivalent ions have a 'greater' charge and are therefore affecting the solution interactions more). Also, since NaBr dissociates to only two particles, we can conclude it will behave more ideally. Finally, based on these two reasons, we can conclude that out of the two given compounds, NaBr will behave more ideally and have an actual freezing point closer to its predicted (theoretical) value.

To know more about freezing point, visit: brainly.com/question/3121416

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Anvisha [2.4K]

Answer:  Option (e) is the correct answer.

Explanation:

A compound that will dissociate in water or an aqueous solution to give hydrogen ions(H^{+}) is known as an acidic substance.

When RbH is dissolved in aqueous solution then it dissociates as follows.

RbH \rightarrow Rb^{+} + H^{-}.

C_{2}H_{2} is non-polar in nature. So, it will not dissociate into ions when dissolved in an aqueous solution.

PH_{3} will also remain neutral and does not dissociate into ions.  

CaH_{2} when dissolved in water then it dissociates as follows.

CaH_{2} \rightarrow Ca^{2+} + 2H^{-}  

Whereas when HF is dissolved in aqueous solution then the reaction will be as follows.

HF \rightarrow H^{+} + F^{-}

Thus, we can conclude that out of the given options HF is the compound which will produce an acidic aqueous solution.

4 0
4 years ago
Read 2 more answers
What is the definition of a physical property of matter?
Bezzdna [24]
<span>Physical properties are any properties of matter which can be perceived or observed without changing the chemical identity of the sample.</span>
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3 years ago
The gas phase decomposition of dimethyl ether at 500 °C CH3OCH3(g) → CH4 (g) + H2 (g) + CO (g) is first order in CH3OCH3 with a
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Answer:

Check the explanation

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4 years ago
Which best describes a compound such as sodium chloride? a) a pure substance that can be separated into different elements by ph
vitfil [10]

Answer:

d) a pure substance that can be separated into different elements by chemical means.

Explanation:

Hello,

Sodium chloride (NaCl) is a chemical compound composed by sodium and chlorine. They are chemically bonded through a ionic bond which means that the sodium transfers just one electron (valence electron) to the chlorine to form the bond. Now, if we want to separate them, we must induce a chemical process because bond breaking implies a chemical change, not physical. Thus, a typical way to separate them (break the bond) is via electrolysis in which an electric driving force induce the aforementioned breakdown.

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3 years ago
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Naturally occurring Indium has two isotopes.
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Answer:

Average Molar mass is 114.8u

Explanation:

» From the formula of average Relative Atomic Mass [ RAM ]

{ \rm{RAM =  \sum \frac{(isotopic \: mass \times \%abundance)}{100} }} \\

» We have two isotopes of Indium,

  • Indium-113, mass » 112.9u, % » 4.28%
  • Indium-115, mass » 114.9u, % » 95.72%

{ \tt{RAM =  \frac{ \blue{(112.9 \times 4.28)} + { \green{(114.9 \times 95.72)}}}{100} }} \\  \\ { \tt{RAM =  \frac{11481.44}{100} }} \\  \\ { \underline{ \underline{ \tt{ \: RAM = 114.8\: }}}}

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2 years ago
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