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
Georgia [21]
3 years ago
12

What is the [H3O+] of a solution with a pH of 2.56? 2.56 M, 2.75 x 10-3 M, 363 M, or -0.408 M

Chemistry
2 answers:
mote1985 [20]3 years ago
8 0
PH=2.56

pH=-lg[H₃O⁺]

[H₃O⁺]=10^(-pH)

[H₃O⁺]=10⁻²·⁵⁶=0.00275=2.75×10⁻³ mol/L

2.75×10⁻³ M

bonufazy [111]3 years ago
8 0

Answer:

The concentration of hydronium ions in solution is 2.75\times 10^{-3} M.

Explanation:

The pH of the solution is defined as negative logarithm of hydronium ions concentration in a solution. Mathematically written as:

pH=-\log[H_3O^+]

Given, the pH of the solution = 2.56

2.56=-\log[H_3O^+]

[H_3O^+]=0.002754 M=2.75\times 10^{-3} M

The concentration of hydronium ions in solution is 2.75\times 10^{-3} M.

You might be interested in
3. If you start with 8x1025 molecules of Cl, and 25 grams of KI, how many grams of KCl would
miskamm [114]

Answer:

Percent yield = 89.1%

Explanation:

Based on the equation:

Cl₂ + 2KI → 2KCl + I₂

<em>1 mole of Cl₂ reacts with 2 moles of KI to produce to moles of KCl</em>

<em />

To solve this quesiton we must find the moles of each reactant in order to find the limiting reactant. With the limiting reactant we can find the moles of KCl and the mass:

<em>Moles Cl₂:</em>

8x10²⁵ molecules * (1mol / 6.022x10²³ molecules) = 133 moles

<em>Moles KI -Molar mass: 166.0028g/mol-</em>

25g * (1mol / 166.0028g) = 0.15 moles

Here, clarely, the KI is the limiting reactant

As 2 moles of KI produce 2 moles of KCl, the moles of KCl produced are 0.15 moles. The theoretical mass is:

0.15 moles * (74.5513g / mol) =

11.2g KCl

Percent yield is: Actual yield (10.0g) / Theoretical yield (11.2g) * 100

<h3>Percent yield = 89.1%</h3>
3 0
3 years ago
What is unusual about solid water compared to solids of other materials?
fomenos
Solid water is completely clear
3 0
3 years ago
Which of the following correctly describes the state of matter of one of the samples? D is a liquid because it retains its shape
Brut [27]
D is a solid because it retains its shape
7 0
2 years ago
Which of the following would violate laboratory safety rules? (1 point)
mixer [17]

Answer:

wearing open toed shoes

Explanation:

this is because you could drop said chemicals and hurt yourself unless you are where some cover on your feet.

5 0
2 years ago
Zinc chloride + Magnesium →
Gelneren [198K]

Answer:

im assuming you need the balanced equation

Explanation:

Zn + MgCl2 = ZnCl2 + Mg

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is one of the by products of using a cooling system?
    5·1 answer
  • Newtons second law deals most cosely with
    5·1 answer
  • The water bottle contains 575 grams of water at 80°C. The water eventually cools to
    13·1 answer
  • Help on math question please (will mark as brainliest)
    11·1 answer
  • Assume that the reaction for the formation of gaseous hydrogen fluoride from hydrogen and fluorine has an equilibrium constant o
    9·1 answer
  • Determine the number of Au atoms found in 5.18 grams of gold.
    14·1 answer
  • I just need 4-8! Plz hurry!!!!!!!!!!!
    12·1 answer
  • What molecule is this?
    13·2 answers
  • Which type of tropism works together with hydrotropism?
    14·2 answers
  • A student sets up the following equation to convert a measurement.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!