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
deff fn [24]
3 years ago
8

Explain why conjugate pairs must be composed of weak acids and bases.

Chemistry
1 answer:
lidiya [134]3 years ago
8 0
A strong acid must have a weak conjugate base and a weak acid must have a strong conjugate base. The reason behind this is simple.
A "strong" acid or base is actually one that is unstable and will readily dissociate when added to water. A "weak" acid or base is one that is stable, and does not dissociate in water.

If an acid is to be "strong", it must readily dissociate to release hydrogen ions. However, the conjugate base that is formed must also be stable, so that is does not combine back with the released hydrogen ions, making it a weak base.
You might be interested in
Physical or Chemical change?
Diano4ka-milaya [45]

Answer:   Chemical Change

Explanation:

because it probably doesnt change the physical anatomy of the object only the atoms/ molecule relations

4 0
3 years ago
1. What are 4 physical properties of oxygen? <br><br> 2. What are 4 chemical properties of oxygen?
Karo-lina-s [1.5K]

Answer:

physical properties:

It is a colorless, odorless and tasteless gas.

It readily dissolves in cold water.

It is highly reactive and form oxides with almost all elements except noble gases.

Liquid oxygen is strongly paramagnetic.

Chemical properties:

Oxygen is a highly reactive nonmetallic element; it is a strong oxidizing agent with high electronegativity and forms O 2 at Standard Temperature and Pressure (STP).

and i dont have any more for chemical, doggo sorry. :(

4 0
2 years ago
A 100.0 ml sample of 0.20 m hf is titrated with 0.10 m koh. determine the ph of the solution after the addition of 200.0 ml of k
xeze [42]
The balanced equation for the reaction between KOH and HF is 
KOH + HF ---> KF + H₂O
stoichiometry of KOH to HF is 1:1
the number of HF moles reacted - 0.20 mol/L x 0.1000 L = 0.020 mol
the number of KOH moles reacted - 0.10 mol/L x 0.2000 L = 0.020 mol
KOH is a strong base and HF is a strong acid therefore they completely ionise into their corresponding ions
KOH --> K⁺ + OH⁻
HF ---> H⁺ + F⁻
number of H⁺ moles reacted = number of OH⁻ moles reacted
solution is completely neutralised no excess hydroxide or hydrogen ions
therefore when solution is neutral , pH = 7
pH of solution = 7
5 0
3 years ago
On veut comparer l’efficacité de la configuration batch avec celle du continu CSTR pour la production de 10^3 tonnes de levures
belka [17]

Answer:

peux tu me donner plus de précisions stp concernant le détail de calcul que tu souhaite avoir  ?

Explanation:

8 0
3 years ago
Cyclohexane, a commonly used organic solvent, is 85.6% c and 14.4% h by mass with a molar mass of 84.2 g/mol. what is its molecu
puteri [66]

The molecular  formula of   organic solvent  is    <em>C6H12</em>


<h2>calculation</h2><h3>find the empirical formula first as in step 1 and 2</h3>

Step 1: f<em>ind the moles of C and H</em>

  • moles =  % composition/molar mass
  •       from periodic table molar mass of C= 12 g/mol while that of H= 1 g/mol
  • moles is  C is therefore = 85.6/12=  7. 13 moles
  •  moles of H=  14.4/1 - 14.4 moles

  Step 2:  <em>calculate the mole  fraction  by dividing each mole by smallest number of mole(7.13)</em>

  • that is C= 7.13/7.13 = 1

         H=  14.4/7.13 =2

the empirical formula is therefore = CH2

<h2>Then calculate the molecular formula from empirical formula</h2>

step 3: divide the  grams molar mass  by empirical formula mass

               empirical formula mass =  12+(1 x2) = 14 g/mol

    = 84.2/ 14 = 6

step 4: multiply  each of the subscript  within the empirical  formula with the value gotten in step 3

  • that is  [CH2]6 = C6H12  therefore the molecular formula = <u>C6H12</u>
8 0
3 years ago
Other questions:
  • Which component is missing from the process of cellular respiration? Glucose + Oxygen → Carbon Dioxide + ________ + Energy
    13·2 answers
  • Is the following chemical reaction balanced?
    11·2 answers
  • Consider the reaction below. Mg(s) + 2HCl(aq) mc019-1.jpg H2(g) + MgCl2(aq) What is the most likely effect of an increase in pre
    13·2 answers
  • Identify which of the bonds in calcium hydroxide, Ca(OH)2, are ionic and which are covalent.
    8·2 answers
  • Water could be made to boil lower than its normal boiling point of 100 degrees Celsius at 92 degrees Celsius by?
    11·1 answer
  • A compound consists of 40.00% C, 6.713% H and 53.28% O on a mass basis and has a molar mass of about 180 g/mole. Determine the m
    9·1 answer
  • A student prepares 150. mL of a 2.00 M Ba(OH)2 aqueous solution in lab. What mass of Ba(OH)2 is fully dissolved in the solution?
    11·1 answer
  • A certain hybrid car has a mileage rating of 47 miles per gallon. If the car makes a trip of 279 miles, how many gallons of gaso
    15·2 answers
  • How many moles of oxygen do you need to burn one mole of Mg?
    10·1 answer
  • What type of energy is best described as the energy required to break the bonds present in the reactants?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!