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iogann1982 [59]
3 years ago
11

Question

Chemistry
1 answer:
Tanzania [10]3 years ago
8 0

ANswer:-

Yes, it would occur without additional energy because the reaction is exothermic.

Explanation :-

Find Hydrogen enthalpies of both sides

Reactant=413+839+432=1684KJ/mol

Product=413KJ/mol

Clearly shown

\\ \bull\sf\dashrightarrow \Delta H=-ve

Hence its an exothermic reaction.

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To measure the solubility product of lead (II) iodide (PbI2) at 25°C, you constructed a galvanic cell that is similar to what yo
Veronika [31]

Answer:

0.2320V

Explanation:

Voltage can be defined as the amount of potential energy available (work to be done) per unit charge, to move charges through a conductor.

Voltage can be generated by means other than rubbing certain types of materials against each other.

Please look at attached file for solution to the problem.

8 0
4 years ago
What is the measurement?
Lady bird [3.3K]

Pretty sure it's 5.25Explanation:

3 0
3 years ago
What is the molar solubility of magnesium carbonate ( MgCO3 ) in water? The solubility-product constant for MgCO3 is 3.5 × 10-8
DaniilM [7]

Answer:

S MgCO3 = 1.8708 E-4 M at 25 °C

Explanation:

  • MgCO3 ↔ Mg2+  +  CO32-

           S                S             S

  • Ksp = 3.5 E-8

⇒ Ksp = 3.5 E-8 = [ Mg2+ ] * [ CO32- ] = S * S

⇒ Ksp = 3.5 E-8 = S²

⇒ S = √3.5 E-8

⇒ S = 1.8708 E-4 M

   

8 0
3 years ago
Read 2 more answers
When the following redox equation is balanced with smallest whole number coefficients, the coefficient for Sn(OH)3– will be ____
Gnom [1K]

Answer:

The coefficient of Sn(OH)_3^{-} is 3 in the balanced redox reaction.

Explanation:

Oxidation reaction is defined as the chemical reaction in which an atom loses its electrons. The oxidation number of the atom gets increased during this reaction.

X\rightarrow X^{n+}+ne^-

Reduction reaction is defined as the chemical reaction in which an atom gains electrons. The oxidation number of the atom gets reduced during this reaction.

X^{n+}+ne^-\rightarrow X

For the given chemical reaction:

Bi(OH)_3+Sn(OH)_3^{-}\rightarrow Sn(OH)6^{2-}+Bi

The half cell reactions for the above reaction follows:

Oxidation half reaction:  Sn(OH)_3^{-}+3OH^-\rightarrow Sn(OH)6^{2-}+2e^-

Reduction half reaction:  Bi(OH)_3+3e^-\rightarrow Bi+3OH^-

To balance the oxidation half reaction must be multiplied by 3 and reduction half reaction must be multiplied by 2 thus, the balanced equation is:-

3Sn(OH)_3^{-}+3OH^-+2Bi(OH)_3\rightarrow 3Sn(OH)6^{2-}+2Bi

<u>The coefficient of Sn(OH)_3^{-} is 3 in the balanced redox reaction.</u>

5 0
3 years ago
The concentration of a chemical degrades in water according to first-order kinetics. The degradation constant is 0.2 day−1. If t
WITCHER [35]

Answer:

3566.4 days

Explanation:

The reaction follows a first-order

Rate = kC = change in concentration/time

k = 0.2 day^-1

C = 0.14 mg.L^-1

Co = 100 mg.L^-1

0.2×0.14 = 100 - 0.14/t

t = 99.86/0.028 = 3566.4 days

4 0
3 years ago
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