A chromate/dichromate system is prepared    2 CrO42−(aq)+2 H+(aq)  ⇋ Cr2O72−(aq)+H2O(l)    Predict the shift in direction of the net reaction when  a. an acid is added.  b. dichromate is decreased.  c. the system is diluted with water.

Q: 8) Suppose that a solution of sulfuric acid (H2SO4) is titrated with potassium hydroxide. a. Write a…

A: a) Balanced chemical equation :   In this reaction, 1mol of sulfuric acid neutralized by the 2mol…

Q: A 59.5 mL sample of a 0.110 MM potassium sulfate solution is mixed with 39.0 mL of a 0.130 M…

A: First note the given balanced equation as shown below, K2SO4(aq)+Pb(C2H3O2)2(aq) →…

Q: Consider the following neutralization equation between barium hydroxide and EDTA: 4 Sr(OH)2 (aq) + 2…

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Q: Marble, a material used in buildings and statues, has the chemical composition CaCO₃. CaCO₃ reacts…

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Q: The Student is required to determine the concentration of a basic NaOH by using the primary standard…

A: KHP , also called as Potassium Hydrogen Phthalate is a salt which is acidic in nature. It is a mono…

Q: 7. The tetraethyl lead, Pb(C2H5)4 in a 25.00 mL sample of gasoline was shaken with 15.00 mL of…

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Q: An experiment determines that 15.0 mL of HNO3 completely neutralizes 0.190 L of 0.18 M Ba(OH)2. What…

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Q: Consider the following precipitation reaction:…

A: The given balanced chemical equation between  Na3PO4  and  CuCl2 is 2 Na3PO4  (aq) +  3 CuCl2…

Q: A0.4334 g sample of canned tuna was analyzed by the Kjeldahl method; 24.61 mL of 0.1180 M HCl were…

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Q: 2. A 0.5192 g sample of a solid monoprotic acid (molar mass of 180.0 g/mole) was dissolved in water…

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Q: in an experiment, 4.0 g of an impure nacl salt sample is dissolved in water and treated with excess…

A: gravimetry is a process in which analyte is converted to insoluble salt so that it  get precipitated…

Q: Consider three hypothetical solids:AX,AX2 and AX3 (each X forms X). Each of these solids has the…

A: Solution :      Solubility is defined as the maximum amount of solute dissolved in an aqueous…

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: 20)What is the NET IONIC equation for the reaction between potassium bromide and mercury sulfate in…

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Q: Write the balanced equation for the reaction of aqueous Pb(ClO3)2 Pb ( ClO 3 ) 2 with aqueous NaI.…

A: Information of question

Q: Malonic acid, H2C3H2O4 (aq), is a diprotic acid, so 2 moles of hydroxide ions are required per mole…

A: A neutralization reaction can be described as a chemical reaction in which acid and base react…

Q: 80. Identify the spectator ions in this equation, and rewrite it as a net ionic equation: Fe* (aq) +…

A: Spectator ions does not participate in the reaction. There is no change in their physical state and…

Q: A chemistry student needs to standardize a fresh solution of sodium hydroxide. He carefully weighs…

A: Here we are required to find the Molarity of sodium hydroxide solution required for standardization…

Q: On a une solution qui est 0.400 M en A(aq) et 0.564 M en B(aq). Il n'y a pas d'autres solutés…

A: •As you have posted multiple questions so we are answering first question for you according our…

Q: 2. A 0.5520 g of potassium hydrogen phthalate, KHCH&O4, a monoprotic weak acid, takes 24.90 mL of…

A: Given data : Mass of KHP , KHC8H4O4 = 0.5520g Volume of NaOH = 24.90ml = 0.0249L Molar mass of KHP =…

Q: 20. For the reaction 4FeCl2(aq) + 302(g) →2Fe2O3(s) + 4Cl2(g), what volume of a solution of FeCl2 is…

A: In the given question->Number of molecules of O2 = 8.12 × 1021 moleculeMolarity of FeCl2 = 0.620…

Q: Exactly 450.0 mL of a solution that contained 462.2 ppm of Ba(NO3)2 were mixed with 260.0 mL of a…

A: ppm = mg / LMass of barium nitrate =mole of barium nitrate = mole of Aluminium sulfate = Reaction is…

Q: 6.) One way to determine the amount of nitrogen in a sample is through a method called Kjeldahl…

A: HCl is monobasic acid and NaOH is monoacidic base Therefore, for neutralization, moles of NaOH used…

Q: From the reaction __ Fe+__ O2→__Fe2O3, how many grams of iron oxide (Fe2O3) are produced when 111…

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Q: 25. Use the reaction: 2AgNO3(aq) + H2SO4(aq) → Ag2SO4(s) + 2H2O(1) 2 HNO3(aq) What volume of 0.123 M…

A: The objective of the question is to calculate the volume of AgNO3 solution needed to form a certain…

Q: Utilizing the molarity equation, calculate the concentration of Potassium Hydrogen Phthalate (KHP)…

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Q: Determine the reaction type for the following reactions2Al(s)+3 H2Soa(aq)----> Al…

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Q: have a 3ml Pb(NO3)2 solution that has 0.1 Molarity. I also have a 6ml K2CrO4 solution that is 0.1…

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Q: Match the following reactions with the reaction type. You may use each type more than once. Mg(OH)2…

A: Combustion reaction: Reaction in which an organic compound reacts with oxygen to give carbon dioxide…

Q: 5.00 mL of 5.09 M Fe(NO3)3 is combined with 1.00 mL of 0.50 M HCIO4 and 4.00 mL of 2.00 x 10-M KSCN.…

A: Given: Vol of  Fe(NO3)3 = 5.00ml Concentration [Fe(NO3)3 ] = 5.09M Vol of HClO4 = 1.00ml…

Q: 1. Consider the two-step process for the formation of tellurous acid described by the following…

A: Given two steps are : TeO2 + 2OH- ----------> TeO32- +  H2O  TeO32- + 2H+ (aq) -------> H2TeO3…

Q: What is the chemical reaction equation for the dissolution of solid calcium hydroxide in water? A.…

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Q: What is the initial mass of copper (in g) in the Cu(NO3)2 solution. Cu(NO3)2(aq)+ 2NaOH(aq)->…

A: Ans. 63.5 g of Cu is present in Cu(NO3)2 solution

Q: Consider the following chemical reaction. 3 Zn(C2H3O2)2(aq) + 2 Na;PO4(aq) → 6 NaC2H3O2(aq) +…

A: Molar concentration or molarity (M) of a solution is defined as the number of moles of solute…

Q: Which acid solution is more concentrated, A or B? Explain your response.

A: A more concentrated solution among solutions of same volume refers to the one that contains more…

Q: Ca(ClO3)2 (aq) + NH4F (aq) -> CaF2 (s) + ? A.) Determine the product. B.) Balance the equation C.)…

A: CaClO3  + NH4 F  ‐------------------> CaF2 + NH4ClO3 Hence second product is NH4ClO3

Q: A solution contains 8.14x10 3 M copper(II) acetate and 8.80x10-3 M cobalt(II) nitrate. Solid…

A: The solubility product, Ksp expression for a salt is the product of the concentrations of the ions,…

Q: 3. A 4.912-g sample of a petroleum product was burned in a tube furnace, and the SO₂ produced was…

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Q: b) Water "softeners" work via the principle of ion-exchange. The tank of a water softener is filled…

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Q: A supplement was tested for iron content in a laboratory. First, a random sample of 10 tablets…

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Q: A student prepares a stock solution of BaF2 by dissolving 50.00 g of a BaF2 in 1.00 L of water. An…

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Q: When 50.0mL of a 0.335M potassium carbonate solution is mixed with 0.045L of a 0.390M nickel(II)…

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Q: The alcohol content in a 10.0 g sample of blood from a driver required 4.23 mL of 0.07654 M K2Cr2O7…

A: The volume of K2Cr2O7 = 4.23 mL                                       = 4.23×10-3 L Molarity of…

Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.