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yaroslaw [1]
3 years ago
15

Calculate the equilibrium constant for each of the reactions at 25 ∘C. 2Fe3+(aq)+3Sn(s)→2Fe(s)+3Sn2+(aq)

Chemistry
1 answer:
Fofino [41]3 years ago
8 0
We take activities of Solids and liquids equal 1. The reason is there concentrations not at all change amount of reactant at equilibrium in the reaction. Hence we don't consider concentrations of pure solids and liquids while writing equilibrium constant. So for above reaction, equilibrium constant (K) = [Sn^2 +] ^3 x 1 / [Fe^3+]^2 x 1. Ping me if you have any doubts.
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12.0 g NaHSO4 (MM: 120.1 g/mol) is dissolved in water to make a 2.00 L solution. What is the molarity of the resulting NaHSO4 so
dexar [7]

Answer:

0.05 M

Explanation:

First we <u>convert 12 g of NaHSO₄ into moles</u>, using the <em>given molar mass</em>:

  • 12 g NaHSO₄ ÷ 120.1 g/mol = 0.10 mol NaHSO₄

We can now <u>calculate the molarity of the resulting solution</u>, using the <em>calculated number of moles and the given volume</em>:

  • Molarity = moles / liters
  • Molarity = 0.10 mol / 2.00 L = 0.05 M

5 0
3 years ago
Read 2 more answers
Measuring levels of pollutants, such as nitrogen oxide in the atmosphere, is an example of chemistry research that ____.
Paraphin [41]

Answer:

aims to benefit the environment is the correct answer.

Explanation:

The goal of Aims to the benefits environment is to provide everyone information, values, and skills which are required to preserve and protect the environment.

Aims to benefit the environment includes

  • To decrease emissions and reduce pollution.
  • To improve waste management methods.
  • To reduce the consumption of natural sources.
  • To minimize noise and different nuisances.

3 0
3 years ago
16. Which of the following are examples of ionic compounds? Select all that apply.
mrs_skeptik [129]

Answer:

KBr, FeF3

Explanation:

Potassium ion (K+) + bromide ion (Br-) make the ionic compound KBr

Iron (III) ion (Fe3+) + 3 fluoride ions (F-) make the ionic compound FeF3

NH3 has covalent bonds so it isn't ionic

Mg12 is an elemental compound

3 0
3 years ago
Determinar los números cuánticos del electrón desapareado en el átomo del cloro (Z = 17) y diga si es paramagnético
Musya8 [376]

Answer:

n = 3

l = 1

ml = +1

ms = +1/2

Es paramagnético

Explanation:

Siguiendo las reglas de llenado de orbitales, los 17 electrones del cloro se llenan así:

1S = <u>⇅</u>

2S = <u>⇅</u>

2P = <u>⇅</u> <u>⇅</u> <u>⇅</u>

3S = <u>⇅</u>

3P = <u>⇅</u> <u>⇅</u> <u>↑</u>

<u />

El número cuántico principal n, es el nivel energético donde se encuentra este electrón:

n = 3 (Porque está en el orbital 3P

El número cuántico secundario, l, para el orbital 3P es  = 1:

l = 1

El número cuántico magnético, ml, es determinado por la posición del electrón. Como está en el tercer orbital 3P:

ml = +1

Y el número cuántico de spin, ms (↑ = +1/2; ↓ = -1/2)=

ms = +1/2

Dado que el último electrón se encuentra desapareado, el cloro es paramagnético dado que el espín de el último electrón no tiene su electrón complementario haciendo que este compuesto pueda interactuar con un campo magnético.

3 0
3 years ago
A mass of 50g of calcium carbonate is heated, releasing carbon dioxide and calcium oxide.
Inessa05 [86]

Answer:C

Explanation:

4 0
3 years ago
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