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3 years ago

The formula for the carbonate ion is CO32−. Predict the formula for carbonic acid.

Chemistry

2 answers:

klio [65]3 years ago

7 0

Answer : The formula of carbonic acid is, $H_2CO_3$

Explanation :

Acid : It is a substance that has ability of donating proton or hydrogen ion, $H^+$ . That means, in acid hydrogen should be present in the compound.

The element carbonate is the non-metal polyatomic ion. The stable oxidation state of phosphate ion $(CO_3^{2-})$ is, (-2).

When the hydrogen combine with the carbonate ion, it forms hydrogen carbonate (carbonic acid). The formula of carbonic acid is, $H_2CO_3$ .

It is an ionic compound in which the a metal (hydrogen) react with the non-metal (carbonate ion) and combine with the an ionic bond by the criss-cross method.

Hence, the formula of carbonic acid is, $H_2CO_3$

Vikki [24]3 years ago

6 0

H2CO3 is the formula

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In the laboratory, a general chemistry student measured the pH of a 0.529 M aqueous solution of phenol (a weak acid), C6H5OH to

Artyom0805 [142]

Answer:

The dissociation constant of phenol from given information is $9.34\times 10^{-11}$ .

Explanation:

The measured pH of the solution = 5.153

$C_6H_5OH\rightarrow C_6H_5O^-+H^+$

Initially c

At eq'm c-x x x

The expression of dissociation constant is given as:

$K_a=\frac{[C_6H_5O^-][H^+]}{[C_6H_5OOH]}$

Concentration of phenoxide ions and hydrogen ions are equal to x.

$pH=-\log[x]$

$5.153=-\log[x]$

$x=7.03\times 10^{-6} M$

$K_a=\frac{x\times x}{(c-x)}=\frac{x^2}{(c-x)}=\frac{(7.03\times 10^{-6} M)^2}{ 0.529 M-7.03\times 10^{-6} M}$

$K_a=9.34\times 10^{-11}$

The dissociation constant of phenol from given information is $9.34\times 10^{-11}$ .

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Aleonysh [2.5K]

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