User Account

All Pages

Solution of magnesium hydroxide

Assignment Help Chemistry
Reference no: EM132363087

1. A 100 mL sample of hydrazoic acid, HN3(aq) with a concentration 0.25 mol/L has a pH of 2.78. Calculate the Ka for hydrazoic acid. Remember, when calculating the Ka, do not round off any of the numbers until the very end of the calculation!.

2. Calculate the pH of a 0.025 mol/L solution of magnesium hydroxide.

3. Calculate the pH of a 0.025 mol/L solution of sodium nitrite.

4. Hydrazine, N2H4(aq), is used in the preparation of polymers, pharmaceuticals and rocket fuel. Hydrazine has alkaline properties similar to ammonia and will act as a weak base. Given that a 100 mL sample of 0.10 mol/L hydrazine solution has a pH of 10.55 at 25.0 oC, write the formula for the conjugate acid and calculate the Ka of the conjugate acid.

Formula for the conjugate acid of hydrazine:

Calculate the Ka of the conjugate acid:

Reference no: EM132363087

Questions Cloud

Why is the electron in a bohr hydrogen atom : Why is the electron in a Bohr hydrogen atom bound less tightly when it has a quantum number of 3 than when it has a quantum number of 1?
Threshold frequency for sodium metal : What is the threshold frequency for sodium metal if a photon with frequency 6.66 × 1014 s-1 ejects an electron with 7.74 × 10-20 J kinetic energy?
Describe the direction of movement of the electrons : Describe the direction of movement of the electrons as well as the direction of movement of the anions and cations within an electrolytic or Galvanic cellwhile
Prevent or slow the rust forming process : Use redox theory to explain the corrosion of iron and briefly describe 2 ways to prevent or slow the rust forming process.
Solution of magnesium hydroxide : Calculate the Ka for hydrazoic acid. Remember, when calculating the Ka, do not round off any of the numbers until the very end of the calculation!.
Define a lewis acid and a lewis base : Define a Lewis acid and a Lewis base. Are all Lewis bases also Bronsted-Lowry bases? Explain.
Excess of hydrochloric acid : How many moles of Hydrogen gas will be produced if you start with 2.5 moles of Magnesium and an excess of Hydrochloric Acid
What is the sequence by which the anions : What is the sequence by which the anions below will precipitate out of solution as the concentration of lead(II) ions is increased?
Ammonia and hydrochloric acid exothermic or endothermic : Is the neutralization reaction between ammonia and hydrochloric acid exothermic or endothermic? Explain your answer.

Reviews

Write a Review

Chemistry Questions & Answers

  Determine the volume of aqueous acetic avid

find the volume of aqueous acetic avid required to prepare an effective buffer solution when 8.2 grams of sodium acetate is used. Assume 500mL is required for the buffer solutions and also find the pH of the buffer.

  Explain the value of w and the work done on the gas

An ideal gas is allowed to expand at constant temperature from a volume of 1.00 L to 5.00 L against a constant external pressure of 2.00 atm. What is the value of w, the work done on the gas

  A weather balloon with a 2-meter diameter at ambient

a weather balloon with a 2-meter diameter at ambient temperature holds 525 grams of helium. what type of electronic

  The difference between the conduction of glacial acetic acid

Why is there a difference between the conduction of glacial acetic acid (CH3COOH) and 0.1 M Acetic acid (CH3COOH)? Please explain in detail.

  If the total amount of energy emitted by a carbon sample is

if the total amount of energy emitted by a carbon sample is 1.98x105 j determine the number of carbon atoms present in

  How to compute the specific heat of the metal

Calculate the specific heat of the metal, assuming perfect insulation and a calorimeter heat capacity of zero.

  Find out the energy output for e-85 and gasoline

Using (and citing) appropriate sources, determine the energy output for E-85 (ethanol) and gasoline (octane) on a) a per mole basis

  Define chloromethane ch3cl arises from the oceans

Chloromethane,CH3Cl, arises from the oceans and from microbial fermentation and is found throughout the environment. It is used in the manufacture of various chemicals and has been used as a topical anesthetic.

  What mass of nahco3 must be added

What mass of NaHCO3 must be added to 1.00 L of 0.10 M Na2CO3 to make a buffer solution whose pH=9.85? pKa2(H2CO3)=10.33

  Describe grades of commercially available ammonium nitrate

List and describe at least two grades of commercially available ammonium nitrate. Discuss some hazards associated with metallic hypochlorites.

  What is the catalytic efficiency of fumarase

In an experiment using 2 nM of fumarase, what is Vmax? What is the catalytic efficiency of fumarase

  What is the magnitude and direction of the magnetic eld

These wires pass through the vertices of an equilateral triangle as shown. What is the magnitude and direction of the magnetic eld at point p?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd