The auto-ionization of water is shown in the reaction below. Given that this reaction is endothermic, what is the pH of pure water at 10'C? H,0 H OH AH-55.80 kimol

Q: Topic: Acid-Base Titration What is a primary standard? What are the requirements to consider a subst...

A: In titration, primary standard is a chemical solution which is used to determine the unknown concent...

Q: In a sample of MgO held at 1500°C grains of MgO grew from 1um diameter to 10 um diameter in 1 hour. ...

A: Answer: In given data: T = 15000C, diameter= 1 to 10 um. time = 1.0 hrs. Diffusion energy = 250 kJ/m...

Q: Which of the following statements is TRUE about activities? The activity coefficient of an ion incre...

A: Here we have to tell about statements that which are true or false. These are regarding about activi...

Q: 1. How do solute particles lower the vapor pressure and elevate the boiling point? Choose all that a...

A: Colligative properties: The colligative properties are those properties of solutions that depend on ...

Q: sample of a gas occupies a volume of 350 mL under a pressure of 0.75 atm. If the temperature is held...

A:

Q: Trans isomers more stability .thane cis isomers True O False O

A: As per bartleby guidelines I answered only first question so please don't mind.Thanks in advance. 

Q: The "cartoon" shown below is an example of an rRNA cloverleaf. True False

A:

Q: specific metal has an atomic weight of 180 g/mol and density of 16.6 g/cm3. It has a BCC structure. ...

A: The atomic radius can be calculated as follows

Q: Which of the following is correctly related? a.Limonene: unsaturated aliphatic b.Limonene: aromati...

A: (1) Correct answer: a LIMONENE: Unsaturated aliphatic  Limonene is a colorless liquid aliphatic hydr...

Q: . For a 0.326 m aqueous solution of sucrose, C12H22011, What is the boiling point? kb = 0.512°C/m

A: These type of questions are solved using the colligative properties. This one is based on the elevat...

Q: A chemist prepares a solution of iron(III) bromide (FeBr) by measuring out 325. g of iron(III) bromi...

A:

Q: At 298.15K the osmotic pressure of the unknown substance was found to be at 2.25x10 Pa. If the conce...

A: Given:          (since 1 atm = 101325 Pa) Concentration of solution in Kg/m3 = 12.75 Kg/m3  Density ...

Q: The half-equivalence point of a titration occurs half way to the equivalence point, where half of th...

A: The half-equivalence point of a titration occurs half way to the equivalence point, where half of th...

Q: The equilibrium for the various proportions of the amyl ester of dichloroacetic acid (CHCI, COOC,H) ...

A: The solution of the question is given below:

Q: only your final answer in a box whenever appropriate. Correctness of units and number of significant...

A:

Q: Which of the following compounds would you expect to show ultraviolet absorptions in the 200 to 400 ...

A:   a) Due to lack of conjugation, we need to talk only simple alkene. For simple alkene its value nea...

Q: A gas cylinder with a volume of 2.50 m' contains 1.00 kmol of carbon dioxide at T= 300 K. Use the SR...

A:

Q: The number of atoms in a mole is called Atomic weight O Avogadro number O Atomic Packing Factor O co...

A:

Q: a Calculate AH° for the reaction 2K(s) + 2H20(1) → 2KOH(aq) +H2 (g) Substance and State AH (kJ/mol) ...

A: Mass of water given = 1000 gram Molar mass of water = 18 g/mol  

Q: The percent by mass of nitrogen for a compound is found to be 63.7%. Which of the following could be...

A: Given -> Percent by mass of nitrogen = 63.7%  

Q: ion will not be (O^-2) .formed True O False O The external electronic configuration of the transitio...

A: Electronic configuration is the arrangement of electrons in shell, subshell and orbitals.

Q: The combustion of a sample of aluminium produces 0.25 mol of aluminium oxide and releases 419 kJ of ...

A: The reaction given is, Given: Moles of Al2O3 produced = 0.25 mol. And the amount of heat released =...

Q: .250 M solution of Na2C204 is to be used in a reaction in which the C2042- will be oxidized to C02. ...

A:

Q: A 600.0 mg sample consisting of only CaC2O4and Mg C2O4is heated at 500oC converting the two salts to...

A: A question based on mole concept that is to be accomplished. 

Q: What are your preconceived notions about toxicology and safety of cosmetics?

A:

Q: Calculate the vapor pressure of a mixture containing 35.6 g of glucose and 5 mL of ethanol at 25°C.

A:

Q: Oxides can react with water to form acids or bases. Identify each of the following oxides as acidic ...

A: All oxides of metals are basic while those of non - metals are acidic  Cl and N are non metals hence...

Q: From data given below, calculate AH", AS", and AG for the following reaction at 25°C. 6CO,(9) AH -39...

A: Gibbs  Energy - Is the maximum work that a thermodynamic system can perform at a constant temperatur...

Q: Nal 1) BrCHzC-0-сн-CH, acetone sol.

A:

Q: 5. A sheet of BcC iron 1 mm thick was exposed to a carburizing gas atmosphere on one side and a deca...

A:

Q: Question 1 You were asked to record observations before, during and at the end of the experiment. Be...

A:

Q: Time Altitude Pressure Temperature Volume Moles 9:00 pm 40 km 9.54 x 10 atm 115,580 L 9:10 pm 20 km ...

A:

Q: 44-50. Proposed what are the surface preparation required in joining aluminum and its alloy?

A: Surface preparation can be defined as the steps and/or procedures that must be followed prior to wel...

Q: Calculate the heat evolved when 13.56g of oxygen gas (O2) is used to burn  white phosphorus at stand...

A: 1) Given, P4(s) + 5O2(g) ➝ P4O10(s)   ∆H = -3013 kJ/mol ∆H is in negative (-) which indicate release...

Q: CH3 OH HgC-NH HgC-N HO ČH3 ČH3

A:

Q: I II III IV V

A: Option V is correct answer

Q: Below is a plot of a typical cooling curve of substances. Describe what happens to the phase and tem...

A: This is a cooling curve , when phase transformation occur temperature remains constant 

Q: Draw the structure of a triacylglycerol formed from glycerol, one molecule of stearic acid, and two ...

A:

Q: Given the reaction: PCl5(g) ⇌ PCl3(g) + Cl2(g) (ΔHº = +87.8 kJ/mol). Which of the following changes ...

A: Le Chatelier's principle: According to the Le Chatelier's principle when a change in concentration t...

Q: Lidocaine, a widely used local anesthetic, is available as a 0.50 %(w/v) solution for injection. Cal...

A: Given,  Mass/volume percent of lidocaine = 0.50%  Calculate the volume of this solution that contain...

Q: From data given below, calculate AH°, AS°, and AG° for the following reaction at 25°C. P,O10 (s) + 6...

A:

Q: 19. Reduction requires a. An aqueous solution b. Reduced free energy c. Increased free energy d. Dec...

A: A question based on molecules that is to be accomplished.

Q: Phosgene is a potent chemical warfare agent that is now outlawed by international agreement. It deco...

A: Given, COCl2(g)⇌CO(g) + Cl2(g) Equilibrium constant (Kc) = 8.3x10-4 Equilibrium concentration of all...

Q: How much is the energy required for vacancy formation for Pb at its melting temperature of 620.6°F i...

A:

Q: For the following statements about chemical equations, check the boxes that represent true statement...

A: A chemical equation is a blue print that represents a chemical reaction.  The reactants are represen...

Q: How many different monosubstituted products are possible when ethylcyclopentane reacts with one equi...

A:

Q: A 53.6 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter, according to the following reac...

A: The mass of ethanol burned is = 53.6 g The molar mass of ethanol is = 46.07 g/mol An increase in the...

Q: Salts fillers to polystyrene True O False O Water pollution causes .economic loss True O False

A: Fillers used in polymers which are added to polymers to reduce its cost.  

Q: For the competing reactions 2A-->R with rate constant k1 and 2A-->S with rate constant k2, the conce...

A:

Q: Calculate the volume in milliliters of a 0.174M potassium dichromate solution that contains 75.0 mmo...

A: Given-> Molarity of potassium dicromate = 0.174 M Mole = 75.0 micromole = 75 × 10^(-6) mole  

Ionic Equilibrium

Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.

Arrhenius Acid

Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red. 

Bronsted Lowry Base In Inorganic Chemistry

Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.