Calculate the pH of a 7. 75x10^-12 M Hydrobromic acid solution.


pH= __________ (round to 4 sig figs)


This solution is _________(acidic/basic).


(30 points)

Answers

Answer 1

To calculate the pH of a 7.75x10^-12 M Hydrobromic acid (HBr) solution, we need to first write the dissociation equation for HBr in water:

HBr + H2O → H3O+ + Br-

The equilibrium constant expression for this reaction is:

Ka = [H3O+][Br-]/[HBr]

Since we know the concentration of HBr, we can use the value of Ka to calculate the concentration of H3O+ in the solution, which will then give us the pH. The value of Ka for HBr is 8.7x10^-9.

Let x be the concentration of H3O+ in the solution. Then, we can write:

8.7x10^-9 = x^2/7.75x10^-12

Solving for x, we get:

x = 2.6x10^-6 M

Therefore, the pH of the solution is:

pH = -log[H3O+] = -log(2.6x10^-6) = 5.59

Since the pH is less than 7, the solution is acidic.

Therefore, the pH of the 7.75x10^-12 M Hydrobromic acid solution is 5.59 and the solution is acidic.

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Related Questions

Magnesium is the limiting reactant in this experiment: Calculate the theoretical yield of MgO for each trial. Determine the percent yield of MgO for each trial. Determine the average percent yield of MgO for both trials.

Answers

Answer:

how do u want me to do this

Explanation:

empirical formula of c8h14

Answers

Answer:

C4H7

Explanation:

Empirical formula is defined as the  simplest ratios of atoms present in the compound.

The empirical formula for C8H14 is C4H7 as if you multiply each coefficient of C4H7 by 2, it will become C8H14. The chemical name of C8H14 or C4H7 is 1-Methylcycloheptene.

Hence, the correct answer is "C4H7".

How many grams of magnesium oxide would be produced if 3.8 grams of magnesium reacted completely with 2.1 grams of oxygen

Answers

Answer:

5.3g of MgO would be produced

Explanation:

Based on the chemical reaction:

2Mg(s) + O₂(g) → 2MgO(s)

1 mole of Mg reacts per mole of oxygen.

To solve this question we need to convert the mass of each reactant to moles in order to find limiting reactant using the chemical equation:

Moles Mg -Molar mass: 24.305g/mol-:

3.8g Mg * (1mol / 24.305g) = 0.1563moles Mg

Moles O₂ -Molar mass: 32g/mol-:

2.1g O₂ * (1mol / 32g) = 0.0656 moles O₂

For a complete reaction of 0.0656 moles of O₂ are required:

0.0656 moles O₂ * (2 mol Mg / 1mol O₂) = 0.132 moles Mg

As there are 0.1563 moles of Mg, Mg is the excess reactant and O₂ the limiting reactant.

0.0656 moles O₂ produce:

0.0656 moles O₂ * (2 mol MgO / 1mol O₂) = 0.132 moles MgO

The mass is -Molar mass MgO: 40.3g/mol-:

0.132 moles MgO * (40.3g / mol) =

5.3g of MgO would be produced

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Answers

Answer:

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Explanation:

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A light-year unit is very small and distances in space are very small.


A light-year unit is very small and distances in space are very large.


A light-year unit is very large and distances in space are very small.


A light-year unit is very large and distances in space are very large.

Answers

Answer:

D

Explanation:

because the rest don’t make any sense

A light-year unit is very large and distances in space are very large. Therefore, the correct option is option D.

What is distance?

No matter the direction of the journey, distance is the overall path that an item in motion has traveled. Since just the length of the path travelled is calculated as well as the motion's direction is ignored, distance is referred to as a scalar number. The distance can only ever be positive; it can never be 0 or negative.

Displacement generally defined as the overall alteration of an object's location and motion direction. Displacement is recognized as a vector quantity since it takes into consideration both the directions of the motion and the amount of the changing position. Displacement may be zero, positive, or negative. A light-year unit is very large and distances in space are very large.

Therefore, the correct option is option D.

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BALANCE THE FOLLOWING EQUATION


1.) Sc(C2H3O2)3 + Na3BO3 = NaC2H3O2 + ScBO3


2.) Ba3(PO4)2 + Ca2SiO4 = Ba2SiO4 + Ca3(PO4)2

Answers

Answer:

1) Sc(C2H3O2)3 + Na3BO3 = 3 NaC2H3O2 + ScBO3

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Answers

Answer:

Explanation:

It involves the thinking of it as an electrical interaction between the positively charged part of an atom and the negatively charged part as well. Succinctly put, the interaction between the proton of an atom and the electron of an atom.

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Answers

Answer:

C

Explanation:

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Answer:

Carbon

Explanation:

Carbon has an electronegativity of 2.55, followed by Tin at 1.96, Silicon at 1.90 and the least electronegative would be Lead at 1.87

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Answers

Answer:

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Explanation:

option (B) is right

Metals used in batteries undergo a chemical reaction with the electrolyte and free the electrons. The flow of electrons produces the electric current.

What is the electrical battery?

An electric battery can be described as a source of electric power containing of one or more electrochemical cells with external connections.

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Oh okie oh gosh oh yeah yeah oh okie oh gosh lol lol

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Yes it’s the right Answer!!!

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Sorry I need to ask question

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Answers

Answer:

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Explanation:

Multiphase Mixtures

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Answers

Answer:

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. ILL GIVE BRAINLY
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Answers

Answer:

It has many trees and vines

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Answer:it’s tall trees rise above all the other layers

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Erwin Schrödinger proposed the quantum mechanical model of the atom, which treats electrons as matter waves. ... The Heisenberg uncertainty principle states that we can't know both the energy and position of an electron.

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[tex] \huge \purple{\tt{Answer:}} [/tex]

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