# chemistry

the Ka for acetic acid, HC2H3O2, is 1.8x10-5 at 25 deg. Celsius. In a .10 M solution of potassium acetate, which of the following are true?
I. [HC2H3O2] = [OH-]
II. [H+] = [OH-]
III. [C2H3O2-] < .10 M

a. I only
b. II only
c. III only
d. I and II
e. I, II and III

What is your thinking on this? Ask yourself why would I be true, or II, or III?

We will be happy to critique your thinking.

1. 👍 0
2. 👎 0
3. 👁 260
1. Ka = [H+]
pH= -log[1.8x10^-5]
pH = 5

1. 👍 0
2. 👎 0
posted by Alyssa
2. I dont understand

1. 👍 0
2. 👎 0
posted by Help me

## Similar Questions

1. ### Chemistry

C7H6O3(s) + C4H6O3(l) → C9H8O4(s) + HC2H3O2(l) is the equation. At 20 degree celsius, how many liters of acetic acid, HC2H3O2, would be formed? The density of acetic acid is 1.05g/cm3.

asked by Emat on February 19, 2009
2. ### Chemistry

A solution buffered at a pH of 5.00 is needed in an experiment. Can we use acetic acid and sodium acetate to make it? If so, how many moles of NaC2H3O2 must be added to a 1.0L of a solution that contains 1.0 mol HC2H3O2 to prepare

asked by Veronica on June 20, 2014
3. ### Chemistry

At 20 degrees celsius ,if the equation is C7H6O3(s)+C4H6O3(l)=C9H8O4+HC2H3O2(l), then how many liters of acetic acid, HC2H3O2 , would be formed if the density of HC2H3O2 is 1.05 g/ml?

asked by Rene' on February 6, 2012
4. ### Chemistry

Asprin, c9h804, is produced through the following reaction of salicyclic acid, c7h6o3, and acetic anhydride, c4h6o3. chemical equation: c7h6o3 + c4h6o3 yields c9h8o4 + hc2h3o2 (all numbers in this equation are subscripts) At 20

asked by Steph on January 21, 2007
5. ### Chemistry

Acetic acid, HC2H3O2, is the sour constituent of vinegar (acetum is Latin for "vinegar" ). In an experiment, 3.76 g of acetic acid was burned. HC2H3O2(l) + 2 O2(g) 2 CO2(g) + 2 H2O(l) If 54.6 kJ of heat evolved, what is ÄH per

asked by Glenna on October 18, 2008
6. ### Chemistry

What is the hydrogen-ion concentration of a solution that is 0.016M in acetic acid and 0.016M in sodium acetate at 25 Celsius? The Ka for acetic acid is 1.8x10^-5

asked by Viv on March 22, 2013
7. ### chemistry

At 25 degrees Celsius the Ka for a 0.120 mol/L solution of acetic acid (HC2H3O2 ) is 1.8 X 10-5. determine the pH of the acetic acid solution

asked by kneLl on November 15, 2010
8. ### chem-acid-base titrations

Acetic acid (HC2H3O2) is an important component of vinegar. A 10.00mL sample of vinegar is titrated with .5052 M NaOH, and 16.88 mL are required to neutralize the acetic acid that is present. a.write a balanced equation for this

asked by natash on April 21, 2008
9. ### chemitry

help me.. The pKa of acetic acid, HC2H3O2, is 4.76. A buffer solution was made using an unspecified amount of acetic acid and 0.30 moles of NaC2H3O2 in enough water to make 2.00 liters of solution. Its pH was measured as 4.40. How

asked by Azy on April 24, 2015
10. ### Chemistry

To prepare an effective buffer in a PH range less than 7 ,it is advisable to select a weak acid-conjugate base pair in which the pK(a) of the weak acid equals the desired PH (+-)1 Over what PH range is the acetic acid-acetate ion

asked by Queenking on October 23, 2011

More Similar Questions