1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MissTica
4 years ago
8

Calculate the ph of a solution that is 0.295 m in sodium formate (nahco2) and 0.205 m in formic acid (hco2h). the ka of formic a

cid is 1.77 ⋅ 10-4.
Chemistry
1 answer:
Evgesh-ka [11]4 years ago
7 0
Hello!

The chemical reaction for the dissociation of Formic Acid is the following:

HCOOH + H₂O ⇄ HCOO⁻ + H₃O⁺

From this reaction we can use the Henderson-Hasselbach equation to find the pH, but first we need to find the value for the pKa:

pKa=-log(Ka)=3,75

pH=pKa + log([HCOO⁻]/[HCOOH])

pH=3,75 + log (0,295/0,205)

pH= 3,90

Have a nice day!

You might be interested in
Give two reasons why scientists use the scientific method
forsale [732]
They use it because it's standerize and evidence vase
6 0
4 years ago
Which of the following chemical reactions represents an acid-base reaction?
LenKa [72]

Answer:

HBr + KOH -> KBr + H₂O

Explanation:

Acid-base reactions always produce a salt [KBr] and water [H₂O].

5 0
2 years ago
Cu + 2AgNO3 → Cu(NO3)2 + 2Ag
Eva8 [605]

Answer:

m_{Ag}=135.8gAg

Y=88.4\%

Explanation:

Hello there!

In this case, according to the described chemical reaction, it is possible to compute the theoretical mass of silver as mass via the 1:2 mole ratio of copper to silver and their atomic mass in the periodic table, in order to perform the following stoichiometric setup:

m_{Ag}=40.gCu*\frac{1molCu}{63.55gCu}*\frac{2molAg}{1molCu}*\frac{107.87gAg}{1molAg}\\\\   m_{Ag}=135.8gAg

Next, given the actual yield of 120 g, we compute the percent yield via:

Y=\frac{120g}{135.8g}*100\%\\\\Y=88.4\%

Regards!

4 0
3 years ago
If an element is more reactive, is it more likely to be found as an element or a compound?
laila [671]
It is more likely to be found as a COMPOUND, as it is more reactive, by the time we found them, they're already reacted with other elements or compounds to form new compounds.
Example is oxygen, it is very reactive, therefore we often found oxygen in water, which is H2O, in earth, instead of just pure oxygen.
5 0
3 years ago
Fluorine is a reactive nonmetal in the Halogen group. What other elements below are also likely to be reactive like fluorine?
Svetradugi [14.3K]

Answer:okay

Explanation:

7 0
3 years ago
Other questions:
  • What is the net ionic equation for the reaction<br> ofFeCl3 and KOH in water?
    11·1 answer
  • Where are globular clusters found
    11·2 answers
  • Relative dating is used to arrange geological events, and the rocks they leave behind, in a sequence. The method of reading the
    10·1 answer
  • In what year did the united states test the first successful atomic bomb?
    8·1 answer
  • What do the elements in each pair have in common?
    9·1 answer
  • What is the molality of a solution of 0.35 moles of sucrose in dissolved in
    14·1 answer
  • Why dose fluorine and chlorine have similar reactive
    6·1 answer
  • What is the definition of a community in environmental science
    13·1 answer
  • Why is the energy supplied by the cooker greater than that calculated ?
    7·1 answer
  • What is the formula for the carboxylic acid functional group?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!