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3 years ago

Explain Isomerism of Alkanols

1 answer:

4 0

When a carbon is bonded to more than two other carbons, a branch is formed. The smallest branched alkane is isobutane. Notice that isobutane has the same molecular formula, C4H10, as n-butane but has a different structural formula. Two different molecules which have the same molecular formula are isomers.

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Based on the sign of E cell, classify these reactions as spontaneous or non spontaneous as written.? assume standard conditions.

sammy [17]

A electrochemical reaction is said to be spontaneous, if $E^{0} cell is positive.$

Answer 1:
Consider reaction: Ni^2+ (aq) + S^2- (aq) ----> + Ni (s) + S (s)

The cell representation of above reaction is given by;
 $S^{2-}/S // Ni^{2+}/Ni$

Hence, $E^{0}cell = E^{0} Ni^{2+/Ni} - E^{0} S/S^{2-}$
we know that, ${E^{0} Ni^{2+}/Ni = -0.25 v$
and ${E^{0} S/ S^{2-} = -0.47 v$

Therefore, $E^{0} cell$ = - 0.25 - (-0.47) = 0.22 v

Since, $E^{0} cell$ is positive, hence cell reaction is spontaneous
.....................................................................................................................

Answer 2:
Consider reaction: Pb^2+ (aq) +H2 (g) ----> Pb (s) +2H^+ (aq)

The cell representation of above reaction is given by;
 $H_{2} / H^{+} // Pb^{2+} /Pb$

Hence, $E^{0}cell = E^{0} Pb/Pb^{2+} - E^{0} H_{2}/H^{+}$
we know that, ${E^{0} Pb^{2+}/Pb = -0.126 v$
and ${E^{0} H_{2}/ H^{+} = -0 v$

Therefore, $E^{0} cell$ = - 0.126 - 0 = -0.126 v

Since, $E^{0} cell$ is negative, hence cell reaction is non-spontaneous.

....................................................................................................................

Answer 3:
Consider reaction: 2Ag^+ (aq) + Cr(s) ---> 2 Ag (s) +Cr^2+ (aq)

The cell representation of above reaction is given by;
 $Cr/Cr^{2+} // Ag^{+}/Ag$

Hence, $E^{0}cell = E^{0} Ag^{+}/Ag - E^{0} Cr/Cr^{2+}$
we know that, ${E^{0} Ag^{+}/Ag = -0.22 v$
and ${E^{0} Cr/ Cr^{2+} = -0.913 v$

Therefore, $E^{0} cell$ = - 0.22 - (-0.913) = 0.693 v

Since, $E^{0} cell$ is positive, hence cell reaction is spontaneous

8 0

3 years ago

Read 2 more answers

Which groups on the periodic table contain metalloids? Groups 1–2 Groups 3–12 Groups 13–16 Groups 17–18

agasfer [191]

The correct answer is groups 13-16

6 0

2 years ago

Read 2 more answers

How are pH and pOH related? A. pOH = 14 + pH ОО B. pOH = 14-pH C. pH = 14 + POH D. pH = pOH - 14

cestrela7 [59]

Answer:

Explanation:

6 0

3 years ago

Read 2 more answers

What are some properties of acids and bases

taurus [48]

Answer:

Properties of Acids:

Taste : Sour

Effect on blue litmus paper: Turns Red

Effect on red litmus paper: No Effect

Effect on skin: Corrosive

Electrical Conductivity: Aqueous solutions conduct electricity

Properties of bases:

Taste : Bitter

Effect on blue litmus paper: No effect

Effect on red litmus paper: Turns Blue

Effect on skin: Harm Skin Tissue

Electrical Conductivity: Aqueous solutions conduct electricity

5 0

3 years ago

Read 2 more answers

The condensed structural formula for 2,2,3-trimethylbutane is _____. ch3c(ch3)2ch(ch3)2 ch3ch2ch(ch3)c(ch3)3 ch3c(ch3)2c(ch3)3 c

Mrac [35]

The chemical structure of 2,2,3-trimethylbutane is shown as attached document. In a condensed structural formula, a branched chain is shown in bracket ().

So according to the chemical structure, the correct condensed structural formula for this molecule is CH3C(CH3)CH(CH3)2

6 0

2 years ago