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
Rufina [12.5K]
3 years ago
15

Does anyone know What does pH= ?

Chemistry
2 answers:
Lesechka [4]3 years ago
4 0
Answer:  Yes.  The pH = 7.6   .
___________________________________________________
Explanation:
____________________________________________________


pH = - log [H⁺]   ; in which, by convention, we assume that there
                            is an implied "base 10" if there is no number listed as a
                            "base" under the "log" sign;

i.e. , " pH = - log [H⁺]⁺ = - log₍₁₀₎ [H⁺] ;
________________________________________________
in which, the:  " [H⁺] " refers to the concentration of hydrogen ions, or " H⁺ " ; in "Molarity" ; that is:  "moles of solutes per Liters of solution", or "mol / L", or "M" .
________________________________________________
Likewise, "pOH = - log [OH⁻] =  - log₍₁₀₎ [OH⁻] " .
________________________________________________
  Note:  pH  + pOH = 14 .
________________________________________________
So, given:  "A solution with 6.4 * 10⁻¹⁰ M  OH (in our problem), find the "pH".
_________________________________________________
   The pOH of the solution is 6.4 .
_________________________________________________
Since pH + pOH = 14 ; 
               we can substitute "6.4" for "pOH" ; and solve for "pH":
_________________________________________________
      pH + 6.4 = 14 ;

        Subtract "6.4" from each side of the equation; to isolate "pH" on one side of the equation; and to solve for the "pH" ;
_________________________________________________
      pH + 6.4 − 6.4 = 14 − 6.4 ;
_________________________________________________
      pH = 7.6   .
_________________________________________________
LiRa [457]3 years ago
3 0
If i am not mistake u can use -log[concentration of oh-] to find it
ie -log[6.4*10^-10]=9.19
You might be interested in
What is a solution of zinc and copper?<br>five letter word
Lana71 [14]

Answer:

Brass

Explanation:

Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties.

5 0
2 years ago
How do i design a controlled experiment to appropriately test a hypothesis?
Virty [35]

Answer:

you need only one independent variable because if not, you wont know what factors have changed your experiment.

Explanation:

3 0
3 years ago
14. pH value are basic are greater than what number while acids are have a pH less than
Mice21 [21]

Answer:

Less than 7 ph value are acidic. Greater than 7 ph value are basic.

5 0
3 years ago
An excess of Ba(No3)2 reacts with 250ml of H2SO4 solution to give 0.55g of BaSo4.determine The concentration in moles per litre
Wewaii [24]
Chemical reaction: Ba(NO₃)₂ + H₂SO₄ → BaSO₄ + 2HNO₃.
V(H₂SO₄) = 250 mL ÷ 1000 mL/L = 0,25 L.
m(BaSO₄) = 0,55 g.
n(BaSO₄) = m(BaSO₄) ÷ M(BaSO₄).
n(BaSO₄) = 0,55 g ÷ 233,38 g/mol.
n(BaSO₄) = 0,00235 mol.
From chemical reaction: n(BaSO₄) : n(Ba(NO₃)₂) = 1 : 1.
n(Ba(NO₃)₂) = 0,00235 mol.
c(Ba(NO₃)₂) = n(Ba(NO₃)₂) ÷ V.
c(Ba(NO₃)₂) = 0,00235 mol ÷ 0,25 L.
c(Ba(NO₃)₂) = 0,0095 mol/L.
7 0
3 years ago
Which processes occur when energy is removed from a substance
ratelena [41]

Answer:

Note that melting and vaporization are endothermic processes in that they absorb or require energy, while freezing and condensation are exothermic process as they release energy.

8 0
2 years ago
Other questions:
  • El superóxido de potasio, KO2, se emplea en máscaras de respiración para generar
    8·1 answer
  • A loaf of bread has a volume of 700 cm3 and a mass of 420 g. what is the density of the bread?
    11·1 answer
  • Which statements describe a closed circuit? Check all that apply.
    9·2 answers
  • What best explains the relationship between structure and function of the cell membrane?
    12·2 answers
  • All animals depend on plants for food. Some animals eat plants for food and other animals eat animals that eat plants. The plant
    12·2 answers
  • One example of a chemical change is
    13·2 answers
  • A chemical reaction in which heat is
    13·2 answers
  • What enzyme catalyzes carbohydrates in the mouth?
    14·1 answer
  • 1. In 1996 a meteor crashed into the Earth near Steelsville, Ontario. The resulting meteorite was found to contain 5,790 g of Mo
    14·1 answer
  • Which salt is most soluble at 90C?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!