Determine the concentrations of the ionic species present in a 0.286 M solution of the H2CrO4. (pKa1 = 0.74, pKa2 = 6.49).

Q: 7. The hardness of water (hardness count) is usually expressed in parts per million (by mass) of…

A: Option (a) is the correct option. Answer is explained below. Ans: Molar concentration of Ca2+ ion in…

Q: of lead. A 50.0 g sample of SAE 15W-40 motor oil is sent for testing. It was found to contain 13.4…

A:

Q: Suppose you have a glass of water with 15 ppb of lead in it. How many atoms of lead ar in the glass…

A: Calculate the mass of lead present in water then convert the mass into number of atoms.The…

Q: Which of the following ionic compounds is INSOLUBLE in water? O LizPO4 NaCl O FeF3 Na2SO3 O…

A: Ionic compounds have a cation and an anion. Some ionic compounds are soluble in water and some are…

Q: 4.31 Identify each of the following species as a Brønstedacid, base, or both: (a) PO43−, (b) ClO2−,…

A: Solution- (a)  PO43- =Bronsted acid because this can be accept an H+ ion to form HPO42- (b) ClO2-…

Q: What functions do iodochloride, acetic acid, carbon tetrachloride, and potassium iodide serve in the…

A: The iodine value (IV) Experiment: The iodine value (IV) is a quantification of oil and fat…

Q: Identify the major ionic species present in an aqueous solution of C,2H22011 (lactose) an BasO,…

A: Ionic compounds are the compounds which are made up of ions. lactose (C12H22O11) is not a ionic…

Q: water-softening ion exchange systems is

A: The prese of Ca , Mg salts results hardness of water . This Ca or Mg salts react with chemical…

Q: 2.) 1.5g of Calcium fluoride (CaF2) B. Calculate the mass of the substance for each given. 2.) 5.3…

A: A. 2) given, mass of calcium fluoride (CaF2) = 1.5 g moles of calcium fluoride (CaF2) = ? molar mass…

Q: Given the information about the following acids i) HW p Ka =2 ii) HX p Ka =6 iii) HY p Ka =10 iv) HZ…

A:

Q: WHAT IS THE NAME OF EACH IONIC COMPOUNDS AND THE EQUATION REPRESENTING ITS COMPLETE DISSOCIATION IN…

A: An ionic compound completely dissociates in water to form ions. While writing the chemical equation…

Q: In the equation below what is the mole ratio between Na2SO4 and H2O? 2 NaOH (aq) + H2SO4(aq) → 2 H2O…

A: Given reaction: 2 NaOH(aq)+ H2SO4(aq)→2 H2O(l) + Na2SO4(aq) To find: The mole ratio between Na2SO4…

Q: Identify the major ionic species present in an aqueous solution of Na2CO3.  a. Na2+, CO32- b. Na+,…

A: Sodium chloride is a strong electrolyte. The strong electrolyte dissociates into ions completely.

Q: Which substance is neutral? 1. lemon 2. water 3. ammonia 4. bleach

A: One can find the neutral substance by knowing its pH value. If the pH of a substance is 7 then it…

Q: What is the equivalent weight of Na₂S₂O3.5H₂O? Na = 23.0, S = 32.1, O = 16.0, H = 1.0

A: finding the equivalent weight of Na2s2o3.5h2o

Q: The hardness of water is usually expressed in parts per million by mass of CaCO3. What is the…

A: Parts per million (ppm) :-  The number of parts by weight solute present in million (106) parts by…

Q: group A solutions:       Conductivity (ms)       concentration of chloride ions: NaCl…

A: Conductivity  depends the number of ions in solution.

Q: 0.330% of the mass of a hemoglobin molecule is iron.  Calculate the number of iron (II) ions per…

A: Mass percent of hemoglobin is 0.330%. Molar mass of hemoglobin is 6.80×104 g/mol.

Q: Which species is oxidized based on the following reaction? 2 Al* (aq) + 2 Fe(s) → 2 Al(s) + 3…

A: Check reactant side of reaction once again because on reactant side it is 2Fe and on product side it…

Q: 0.200 mol of HI(g) decomposes to H2(g) and I2(g) at 453 °C in a volume of 2.00 L, to [HI]eq = 0.078…

A:

Q: The mg/L concentrations of 2.50x10+ M solutions of HNO, (F.wt 63 g/mol) equal. 15.57 15.75 17.5 15.5

A: Given, molar mass of HNO3 = 63 g/mol  Molarity = 2.50 x 10-4 M

Q: WHAT IS THE NAME OF EACH IONIC COMPOUNDS AND THE EQUATION REPRESENTING ITS COMPLETE DISSOCIATION IN…

A: The names of the ionic compounds are as follows- D) Potassium phosphate E) Sodium carbonate F)…

Q: 2. Write the balanced dissociation or ionization reaction of the following compounds: a. Ba(OH)2 b.…

A: NOTE:   “Since you have asked multiple question, we will solve the second question for you. If you…

Q: Seawater contains an average of 1.08 x 103 ppm of Na* and 270 ppm of SO42. Calculate the molar…

A: Given, Concentration of Na+ ion = 1.08 * 103 ppm Concentration of SO42- ion = 270 ppm Average…

Q: Which of the following ions is most likely to form a soluble sulfate? Select one: a.   Pb2+Pb2+…

A: Sulfate is an anion represented as SO42- , so it would form Compound with only cations . The nature…

Q: For each of the following, specify if the compounds are electrolytes or nonelectrolytes in wat •…

A: Electrolyte is a substance that dissociated into ions in aqueous solution to conduct electricity.

Q: 2. Water has a dielectric constant of 80. How does this explain why most salts dissolve in water?

A:

Q: 2-Identify the major ionic species present in an aqueous solution of CaCOs. A. Ca, Co, B. Ca,c, 0,…

A: Introduction : 2)We have to find the major ionic species in the aqueous solution of CaCO3

Q: 1)KMn0,, OH ? OH 2) H30*

A:

Q: What ions are present in the following solutions: Co(NO3)2 Na2CO3 Ni(NO3)2 Na3PO4

A: Given Four different inorganic salts, whose contributing ions are to be determined.

Q: Using Lewis structures, write balanced equations for the following reactions:(a) HCl(g) + PH3(g)…

A: (a) Lewis structure is representation of a molecule or ion by showing only valence electrons of…

Q: Calculate amount of vitamin c in sample (mg) and concentration of vitamin c (mg/ml). Given: DCIP…

A: Each cm3 of 1% DCIP solution equvalent to 6.071× 10^-4 g ascorbic Acid. 268.1gm DCIP=1Mol…

Q: Determine the concentrations of the following ionic species present in a 0.350 M solution of Na2SO3.…

A:

Q: How many electrons must be added to the left side to balance charge? 3 H20 + ClO3 + _e→ Cl¯ + 6 OH¯…

A: Redox reaction is the reaction where oxidation (loss of electron) and reduction (gain of electron)…

Q: 3\ The [OH-1] = 3.8 x 10 11 M, what is the [H+1] ??

A: Hi, Since you have posted multiple questions, we will solve first question only as per guidelines.…

Q: 250% Explain why KCI is an ideal salt to be used in salt bridge.

A: Dear student I have given answer to your question in the image format.

Q: The letters of the names of three acids have been jumbled up. Rearrange the letters to make the…

A: Chemistry Puzzel

Q: Antacids neutralize the hydrochloric acid in your stomach. What is the correct neutralization…

A: When an acid react with base it form water and salt and the reaction is called as neutralization…

Q: CO32- Express your answer as a chemical formula or an ion. ΑΣφ A chemical reaction does not occur…

A: Given ions are examples of polyatomic ions(ions having more than 1 type of atoms) The names of the…

Q: What mass of Ba(IO3)2 (487 g/mol) can be dissolved in 1 L of water at 25°C? Ba(IO3)2 = Ba2+ + 2 IO3…

A: Ksp is the product of concentration of ions of sparingly soluble salt.

Q: .Give the step-by-step separation techniques you could use for ammonium chloride, calcium carbonate,…

A: A mixture contains ammonium chloride, calcium carbonate, sand, and water need to seperated.…

Q: Chemical Reactions. Identify the type of reaction the indicate whether the compound n bold is ionic,…

A: Several types of reactions of inorganic compounds are reported in literature, some of them are…

Q: Which species is oxidized based on the following reaction? 2 Al3+ (aq) + 2 Fe(s)→2 Al(s) + 3…

A: Which species is oxidized on the following reaction ?

Q: 1.Starting from the number of moles (7.2) How many K+ ions are there? a)5.06 x 10 to the 24 K+…

A: The number of moles of K+ ions=7.2 moles.

Q: Write the chemical reaction that occurs between aqueous ammonia and solid copper(II) phosphate.

A: The dissociation of solid copper (II) phosphate is as follows,

Q: Eutrophication is Loss of biodiversity due to excess of N2 gas in water Loss of biodiversity due to…

A: Eutrophication is the process in which a water body becomes overly enriched with nutrients, leading…

Electron Affinity

When an element undergoes a chemical reaction, it either gains energy or loses energy. This gain or loss of energy is due to the phenomena that occur at atomic level. During reaction, atoms either gain electrons from other atoms or lose electrons to other atoms, and in that process, energy is produced.

P-Block Elements

Elements which are present on the right side of the periodic table are called p-block elements. In addition to the noble gases, they include the families of boron, mercury, nitrogen, oxygen and fluorine. These elements have diverse real-life implementations that we regularly experience around us. 

Metals and Non-metals

The periodic table is composed of metals, semi-metals and nonmetal elements. The physical and chemical properties of metals and nonmetals differ from each other. The study of metals and nonmetals will help one to understand the appropriate application of the particular element.