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3 years ago

What is another name for the acid dissociation constant?

Chemistry

2 answers:

sveticcg [70]3 years ago

4 0

A. Ionization constant

timama [110]3 years ago

4 0

Answer:

a. ionization constant

Explanation:

The acid dissociation constant is an indicative of the strength of an acid in solution i.e. extent to which it dissociates thereby releasing H+ ions. It is represented as Ka

For strong acids, Ka = 1 since they completely dissociate into the respective ions. Example is HCl

HCl → H+ + Cl- Ka = 1

For weak acids like acetic acid (CH3COOH) there is an equilibrium between the dissociated and undissociated ions

CH3COOH ↔ H+ + CH3COO-

$Ka = \frac{[H+][CH3COO-]}{[CH3COOH]}$

Since this process results in the formation of ions, Ka is also referred to as the ionisation constant.

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The equilibrium constant for the reaction

FinnZ [79.3K]

Answer: The concentrations of $Cl_2$ at equilibrium is 0.023 M

Explanation:

Moles of $Cl_2$ = $\frac{\text {given mass}}{\text {Molar mass}}=\frac{10g}{71g/mol}=0.14mol$

Volume of solution = 1 L

Initial concentration of $Cl_2$ = $\frac{0.14mol}{1L}=0.14M$

The given balanced equilibrium reaction is,

$COCl_2(g)\rightleftharpoons CO(g)+Cl_2(g)$

Initial conc. 0.14 M 0 M 0M

At eqm. conc. (0.14-x) M (x) M (x) M

The expression for equilibrium constant for this reaction will be,

$K_c=\frac{[CO]\times [Cl_2]}{[COCl_2]}$

Now put all the given values in this expression, we get :

$4.63\times 10^{-3}=\frac{x)^2}{(0.14-x)}$

By solving the term 'x', we get :

x = 0.023 M

Thus, the concentrations of $Cl_2$ at equilibrium is 0.023 M

7 0

3 years ago

What led Marie Curie to draw the following conclusions? (b) A highly radioactive element, aside from uranium, occurs in pitchble

AVprozaik [17]

Making repeated separations of the various substances in the pitchblende, Marie and Pierre used the Curie electrometer to identify the most radioactive fractions. They thus discovered that two fractions, one containing mostly bismuth and the other containing mostly barium, were strongly radioactive.

<h3>What was surprising about pitchblende?</h3>

Since it was no longer appropriate to call them “uranic rays,” Marie proposed a new name: “radioactivity.”

Even more surprising, Marie next found that a uranium ore called pitchblende contained two powerfully radioactive new elements: polonium, which she named for her native Poland, and radium.

<h3>Why is radium more radioactive than uranium?</h3>

It is 2.7 million times more radioactive than the same molar amount of natural uranium (mostly uranium-238), due to its proportionally shorter half-life.

Learn more about highly radioactive elements here:

<h3>brainly.com/question/10257016</h3><h3 /><h3>#SPJ4</h3>

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2 years ago

What types of elements are responsible for the colors of fireworks?

AfilCa [17]

Transition metals usually

3 0

3 years ago

Solid magnesium has mass of 1300g and a volume of 743cm . what's the density of magnesium?

Lilit [14]

D = m / V

d = 1300 g / 743 cm³

d = 1.749 g/cm³