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2 years ago

Which is not a strong electrolyte

Chemistry

2 answers:

Allushta [10]2 years ago

3 0

Here N H 4 O H { NH }_{ 4 }OH NH4OH is not a strong electrolyte because it doesn't dissociates completely.

mr_godi [17]2 years ago

3 0

Answer: water

Explanation:

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Biphenyl, C12H10,C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6.C6H6. At 25 ∘C,25 ∘C, the vapor p

cestrela7 [59]

Answer:

Vapour pressure of solution is 78.151 torr

Explanation:

Molar mass of biphenyl = 154.21 g

Molar mass of benzene = 78.11 g

19.2 g biphenyl = (19.2/154.21) moles of biphenyl = 0.125 moles of biphenyl

33.7 g of benzene = (33.7/78.11) moles of benzene = 0.431 moles of benzene

Total number of moles = (0.125+0.431) moles = 0.556 moles

Mole fraction of benzene in solution = (0.431/0.556) = 0.775

According to Roults law, vapour pressure of solution made from non-volatile solute = $(mole fraction of solvent in solution)\times (vapour pressure of pure solvent)$

Here solute is biphenyl and solvent is benzene

So, vapour pressure of solution = $(0.775\times 100.84)torr$ = 78.151 torr

8 0

2 years ago

List the following aqueous solutions in order of decreasing freezing point: 0.040 m glycerin (C3H8O3), 0.020 m potassium bromide

gogolik [260]

Answer:

Solutions from highest to lowest freezing point:

0.040 m glycerin = 0.020 m potassium bromide > 0.030 m phenol

Explanation:

$\Delta T_f=i\times K_f\times m$

$\Delta T_f$ = Depression in freezing point

i = van'T Hoff fcator

$K_f$ = Molal depression constant of solvent

m = molality of the solution

Higher the value of depression in freezing point at lower will be freezing temperature the solution.

1. 0.040 m glycerin

Molal depression constant of water = $K_f=1.86^oC/m$

i = 1 ( organic molecule)

m = 0.040 m

$\Delta T_{f,1}=1\times\times 1.86^oC/m\times 0.040 m$

$\Delta T_{f,1}=0.0744^oC$

2. 0.020 m potassium bromide

Molal depression constant of water = $K_f=1.86^oC/m$

i = 2 (ionic)

m = 0.020 m

$\Delta T_{f,2}=2\times\times 1.86^oC/m\times 0.020 m$

$\Delta T_{f,2}=0.0744^oC$

3. 0.030 m phenol

Molal depression constant of water = $K_f=1.86^oC/m$

i = 1 (organic)

m = 0.030 m

$\Delta T_{f,3}=1\times\times 1.86^oC/m\times 0.030 m$

$\Delta T_{f,3}=0.0558^oC$

$0.0744^oC=0.0744^oC > 0.0558^oC$

$\Delta T_{f,1}=\Delta T_{f,2}>\Delta T_{f,3}$

Solutions from highest to lowest freezing point:

0.040 m glycerin = 0.020 m potassium bromide > 0.030 m phenol

5 0

2 years ago

To dissolve in water, aluminum (AI) should form a compound with

astra-53 [7]

Answer:

Explanation:

Nitrate of most of the elements are water soluble . Aluminium nitrate is also one of them . Aluminium nitrate is easily dissolved in water . It forms hydrated salt whose formula is as follows

Al( NO₃ )₃ . 9H₂O

It is a white crystalline salt . It is also soluble in alcohol.

7 0

3 years ago

onsider the structure. a carbon is bonded to two three carbon chains and a branched alkane. the branched alkane is a 2 carbon ch

pshichka [43]

If we consider a structure in which a carbon is bonded to two three carbon chains and a branched alkane then the branched alkane is a 2 carbon chain with a ethyl on Carbon 1 then the correct name of the structure is <u>4-(isopropyl)heptane. </u>

The two three carbon chains bonded to the carbon atom will form the parent chain of this structure and this chain will have 7 carbon atoms in it.

Since this chain is that of an alkane and it has no functional group attached so the root name will be heptane.

Now, we have to add a prefix by naming the branched alkyl chain. The branched chain has 3 carbon atoms in it with a methyl group on carbon 1.

So, this name of this group will be propyl.

The position of this propyl group is 4th on the parent chain so the full name of the structure will be 4-(isopropyl)heptane.

To know more of branched alkane here

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4 0

1 year ago

H₂O is the Lewisin thefollowing reaction.SO3(aq) + 2H₂O(1) = H₂SO3(aq) + 2OH- (aq)ABacidbase

svet-max [94.6K]

The definition of a Lewis acid and base is: Acid is any substance that can accept a pair of nonbonding electrons, while that a Base is a species that contains a nonbonding pair of electrons, and in the reaction in the question:

SO3 + H2O -> H2SO3 + 2 OH-

We have SO3 as the conjugate base of the acid H2SO3 and H2O is acting as an acid in this occasion, therefore the answer is Acid

8 0

9 months ago