QUESTION 57 Select the diamagnetic ion. A. Ni2+ B. Cu2+ C. Sr2+ D. Cr3+

At 1000 K, a sample of pure NO2 gas decomposes. 2 NO2(g) equilibrium reaction arrow 2 NO(g) + O2(g) The equilibrium constant KP

kirill115 [55]

Answer: The pressure of NO and $NO_2$ in the mixture is 0.58 atm and 0.024 atm respectively.

Explanation:

We are given:

Equilibrium partial pressure of $O_2$ = 0.29 atm

For the given chemical equation:

$2NO_2(g)\rightleftharpoons 2NO(g)+O_2(g)$

Initial: a

At eqllm: a-2x 2x x

Calculating for the value of 'x'

$\Rightarrow x=0.29$

Equilibrium partial pressure of NO = 2x = 2(0.29) = 0.58 atm

Equilibrium partial pressure of $NO_2$ = a - 2x = a - 2(0.29) = a - 0.58

The expression of $K_p$ for above equation follows:

$K_p=\frac{p_{O_2}\times (p_{NO})^2}{(p_{NO_2})^2}$

We are given:

$K_p=158$

Putting values in above expression, we get:

$158=\frac{0.29\times (0.58)^2}{(a-0.58)^2}\\\\a=0.555,0.604$

Neglecting the value of a = 0.555 because it cannot be less than the equilibrium concentration.

So, $a=0.604$

Equilibrium partial pressure of $NO_2$ = (a - 0.58) = (0.604 - 0.58) = 0.024 atm

Hence, the pressure of NO and $NO_2$ in the mixture is 0.58 atm and 0.024 atm respectively.

4 0

3 years ago

Which acid is almost completely ionized in a dilute solution at 298k?

Alex777 [14]

Considering choices;
a. CH3COOH
b. H2S
c. H2PO4
d. HNO3
The answer would be HNO3; this is because it the strongest acid. Strong acids are acids that are fully ionized while weak acids are only partially ionized. At the same concentrations, strong acids have a higher concentration of hydrogen than weak acids. Examples of strong acids include; hydrocloric acid and nitric acid, while weak acids include; ethanoic acids.

5 0

4 years ago

Part 1: Draw the major organic product for the proton transfer reaction between sodium hydride and ethanol; be sure to include l

valina [46]

Answer:

Major product ethoxide ion

Explanation:

Sodium hydride acts as a strong base towards ethanol.
Hydride ion abstracts one proton from -OH group in ethanol to produce sodium ethoxide and hydrogen gas.
It is an example of acid-base reaction where sodium hydride acts as a base and ethanol acts as an acid
Structure of major organic product i.e. ethoxide ion has been shown below.

4 0

3 years ago

What kind of reaction is happening when glaze is fired

bija089 [108]

Answer:

Oxidation and Reduction occurs

Explanation:

5 0

3 years ago

Which is the pathway of light as it travels through the eye?cornea → iris → retina → lenscornea → iris → lens → retinairis → cor

Vikki [24]

Answer:

Cornea >iris>lens >retina

Explanation:

Can't exactly figure out the answer but I think it should look like this

7 0

3 years ago

QUESTION 57 Select the diamagnetic ion. A. Ni2+ B. Cu2+ C. Sr2+ D. Cr3+​

QUESTION 57 Select the diamagnetic ion. A. Ni2+ B. Cu2+ C. Sr2+ D. Cr3+