Hardness in water is caused by the presence of calcium ions, magnesium ions, or both. These minerals in water can cause some everyday problems. Which equation represents the symbol equation for the removal of temporary hardness from water?    a) CaSO₄ + Na₂CO₃ → CaCO₃ + Na₂SO₄ b) Ca(HCO₃)₂→ CaCO₃ + H₂O + CO₂

Q: When the ionic compound Ca(NO3)2 dissociates in water the equation is O Ca(NO3)2 (s) --> Ca²+ (aq) +…

A: The compound given is Ca(NO3)2.

Q: use this equation 2Na3PO4(aq) + 3Ba(OH)2(aq) → Ba3(PO4)2(s) + 6NaOH(aq) How many moles of…

A: The balanced reaction given is, => 2 Na3PO4 (aq) + 3 Ba(OH)2 (aq) → Ba3(PO4)2 (s) + 6 NaOH (aq)…

Q: For the following reaction, Na* (aq) + OH (aq) + H* (aq) + Cl- (aq) Na* (aq) + Cl- (aq) + H20 ()…

A: In given reaction , sodium ion Na+(aq) and chloride ion cl-(aq) remain same in both left hand side…

Q: Soluble or Insoluble LiOH Na2SO4 AgI Barium bromide Mercury(I) nitrate (NH4)2SO4 Lead(II)…

A: Given : Some compounds are given To find: Whether they are soluble or insoluble Solution: If the…

Q: The concentration of urea in a solution prepared by dissolving 16 g of urea in 36 g of H2OH2O is…

A: In order to calculate the mass % of urea we have to first write down the given data: Mass of…

Q: În the laboratory you are given the task of separating Ca and Ph* ions in aqueous solution. For each…

A:

Q: One way the U.S. Environmental Protection Agency (EPA) tests anions in solution will combine with…

A: Given reactionNiCl2(aq.)  +  2 AgNO3 (aq.) → 2 AgCl(s)  + Ni(NO3)2 (aq.)Mass of Silver Chloride =…

Q: Sodium hydrogen carbonate (NaHCO,), also known as sodium bicarbonate or "baking soda", can be used…

A:

Q: Below are sixty-three ionic reactions. According to the solubility rules, if a precipitate forms,…

A: Ionic compound can easily dissolve in water because of it's polar nature . So if a compound is ionic…

Q: Boric acid, H3BO3, is commonly used in eyewash solutions in chemistry laboratories to neutralize…

A: Given : Molarity of NaOH = 0.475M

Q: Sodium hydrogen carbonate (NaHCO3), also known as sodium bicarbonate or "baking soda", can be used…

A: Given, HCl(aq) + NaHCO3(aq)  → NaCl +  H2O(l) + CO2(g) Molarity of HCl solution = 0.052 M = 0.052…

Q: 9.A A process called selective precipitation allows for one ion to be removed from a solution…

A: A question based on analytical separations that is to be accomplished.

Q: chemist is calibrating a solution of NaOH, which you happen to know is 0.445M in NaOH. You are…

A: When sodium hydroxide, NaOH is titrated with potassium Hydrogen phthalate, KHP then following…

Q: Sodium phosphate dissociates when it dissolves in water. Na3PO4 (aq) --> 3 Na+ (aq) +  PO43- (aq)…

A: Sodium phosphate is a strong electrolyte and it dissociates as follows: Na3PO4aq  →  3Na+aq  +…

Q: Milk of magnesia (magnesium hydroxide) reacts with stomach acid (hydrochloric acid).  Calculate the…

A: Correct : 0.583 M Given neutralisation reaction; Mg(OH)2 + 2HCl ⟷⟷ MgCl­2 + 2H2O Given volume of…

Q: 2C12H4Cl6+23O2+2H2O⟶24CO2+12HCl2C12H4Cl6+23O2+2H2O⟶24CO2+12HCl   How many moles of water are needed…

A: Given, moles of O2 = 10.0 mol The given reaction is : 2 C12H4Cl6 + 23 O2 + 2 H2O -----> 24 CO2 +…

Q: What is the amount concentration (in mol/L) of sodium ions and carbonate ions when a 0.144 mol/L…

A: Here given that  Concentration of Sodium carbonate  = 0.144 mol/L

Q: KBr AgNO3 Ej: KBr + AgNO3 →→KNO3 AgBr Na2CO3 Cas NHẠCH

A: First we would write products by double displacement reaction . Then using solubility rules, we…

Q: 73.  The hardness of water (hardness count) is usually expressed in parts per million (by mass) of…

A: 1 mol CaCO3 gives 1 mol of Ca2+.

Q: Write the balanced net ionic equation and name the precipate formed  1. Cu (NO3)2 (aq) + NaOH (aq)…

A:

Q: When the following solutions are mixed together, what precipitate (if any) will form?Note: Leave the…

A: → If in the product we will get solid , it means ppt occur .a) NaOHaq+KNO3aq→NaNO3+KOH…

Q: The hardness of water (hardness count) is usually expressed in parts per million (by mass) of CaCO3,…

A: Given: Hardness=175 mg CaCO3/L

Q: 4. Magnesium hydroxide dissociates partially according to the following equation Mg(OH), 2 Mg²+ + 2…

A:

Q: 6. A sample of hydrochloric acid is standardized using sodium bicarbonate. Write the balanced…

A: a.) We would write a balanced chemical equation.  b.) Then to calculate concentration of…

Q: Citric acid, H3 C6 H; O7 occurs in plants. Lemons contain 5% to 8% citric acid by mass. The acid is…

A: Given- Molal concentration of citric acid solution = 0.657 m Density of solution = 1.049 g / ml To…

Q: In a terrible accident, a solution consisting of 2.37 kg of nitric acid, HNO3, was spilled on the…

A: Given: The mass of HNO3 that was spilled = 2.37 kg The mass of Na2CO3 added = 2.00 kg We have to…

Q: Baking soda (sodium bicarbonate, NaHCO3) reacts with acids in foods to form carbonic acid (H2CO3),…

A: Baking soda or sodium bicarbonate reacts with lactic acid to give sodium salt of lactic acid along…

Q: Solutions containing (NH4)2CO3(aq) and CaCl2(aq) are mixed. Will a precipitate form? What is the…

A:

Q: A metal, M, can be dissolved in acidic solutions to form its divalent ion, M2＋, as shown below. If…

A: The balanced chemical equation is: M(s) + 2 HCl(aq) ➜ MCl2(aq) + H2(g) Each mole of metal, M(s)…

Q: Calcium sulfate  (MM= 136.1406) dissolves in cold water to the extent of 0.241 g per 100. mL. What…

A: Calcium sulfate (MM= 136.1406)  CaSO4- = 0.241 g Volume of solution = 100 mL = 0.100 L   The…

Q: The solubility of magnesium fluoride, MgF,, in water is 1.5 x 102 g/L. What is the solubility (in…

A: Solubility = 1.5*10-8 g/L

Q: 2.0 M Mg(NO3)2(aq) is mixed with 2.0 M NaF(aq). Will a precipitate form upon the mixing of these two…

A: Double displacement reactions may be defined as the chemical reactions in which one component of…

Q: Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to…

A: This question can be solved using moles concepts. Given data: *Molarity of KOH is 0.195 M. *Mass oh…

Q: Propane (C3H8) burns in this reaction: C3H8 + 5O2 → 4H2O + 3CO2 If 200 g of propape is burned: a.…

A: Given, Propane (C3H8) burns in this reaction: C3H8 + 5O2 → 4H2O + 3CO2 If 200 g of propape is…

Q: Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to…

A: Answer: 0.8513 grams

Q: Boric acid, H3B03, is commonly used in eyewash solutions in chemistry laboratories to neutralize…

A:

Q: A sample of hydrochloric acid is standardized using sodium bicarbonate. The balanced chemical…

A: Volume of HCl = 35.18 mL = 0.03518 LMass of NaHCO3 = 0.45 gmolar mass of NaHCO3  =84 g/moleNo of…

Q: Sodium hydrogen carbonate (NaHCO,), also known as sodium bicarbonate or "baking soda", can be used…

A:

Q: If the following ions Mg2+, CI, Sr2+, OH are placed in a test tube, the precipitate formed is…

A:

Q: In the laboratory you are given the task of separating Ca2+ and Co2+ ions in aqueous solution. For…

A:

Q: If you add 250 ml of water to 250 ml of a 1.8M NaOH solution, what will the molarity of the diluted…

A: According to law of dilution, the number of moles of solute remains constant in the solution. During…

Q: A chemist prepares a solution of zinc oxalate ZnC2O4 by measuring out 0.00201μmol of zinc oxalate…

A: Given : Moles of Zinc oxalate i.e ZnC2O4 = 0.00201 μmol And volume of solution = 300 mL

Q: If the following ions Ca2+, Cl", Sr2+, OH" are placed in a test tube, the precipitate formed is O…

A: When the following ions (Ca^2+, Sr^2+, Cl^- and HO^-) are put together in a test tube then the…

Q: Sodium hydrogen carbonate (NAHCO,), also known as sodium bicarbonate or "baking soda", can be used…

A: Given, NaHCO3 neutralizes excess HCl through the reaction, HCl (aq) + NaHCO3 (aq)…

Q: Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are…

A:

Q: Marble is calcium carbonate, CaCO3. Its reaction with hydrochloric acid is CaCO3(s)+ 2HC1(aq) →…

A: When marble reacts with HCl, the gas produced is carbon dioxide i.e. CO2

Q: mass of precipitate

A:

Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for