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Chemistry
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19 Jun 2020

and are both weak acids, but is a stronger acid than . Consider the reaction below. 


Determine the value of .

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General Chemistry 2
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Solve problems involving strong acids, strong bases, weak acids, and weak bases
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Related questions

Given the following acids and Ka values:

HClO4 HOAc HCN HF
1 x 107 1.76 x 10-5 4.93 x 10-10 3.53 x 10-4

What is the order of increasing base strength?

a. CN-, ClO4-, F-, OAc-

b. ClO4-, OAc-, CN-,  F-

c. CN-,  F-, OAc-, ClO4-,

d. ClO4-, F-, OAc-, CN-  

e. CN-,OAc-, F-, ClO4-

Are given some acids and Ka vales:

HClO4 → Ka= 1 x 107

HOAc → Ka= 1.76 x 10-5

HCN → Ka= 4.93 x 10-10

HF → 3.53 x 10-4

What is the order of increasing base strength?

a. CN-, ClO4-, F-, OAc-

b. ClO4-, OAc-, CN-, F-

c. CN-, F-, OAc-, ClO4-

d. ClO4-, F-, OAc-,CN-

e. CN-, OAc-, F-, ClO4-

1(a)What is the pH of a buffer system that contains 0.26M hydrocyanic acid (HCN) and 0.30M Sodium cyanide? The Ka of HF is 6.2 x 10-10

1(B)Consider 750mL of the buffer system described above. What are the [HCN] and [CN-] after 0.080 mol of NaOH is added? What is the pH?

1(c)Consider 500mL of the buffer system described above. What are the [HCN] and [CN-] after 0.10 mol of HCl is added? What is the pH?

2.A titration of 15mL of boric acid (H3BO3) required 22mL of 0.25M Ca(OH)2 Write the balanced equation for the reaction of boric acid with Ca(OH)2 and determine how many milligrams of boric acid are present

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