= A solution made with 24.3 grams of a diprotic acid, (Kal = 4.68e-04; Ka2 7.74e-07) dissolved in 189 mL of solution, was titrated with 1.280 M NaOH. Calculate the pH at the first equivalence point: O (a) 3.330 ○ (b) 6.111 ○ (c) 4.721 O (d) 3.721 (e) 5.721

Q: Calculate the maximum mass (in g) of AgCl lost in a chloride analysis as a result of washing the  of…

A: Given, The volume of water = 143 ml  Ksp of AgCl = 0.000000000160. = 1.6 x 10-10

Q: Define or explain the following terms: a)Precipitate: b) Decantation: c)What are the safety rules…

A: Precipitation is the solid form which form in the chemical reactions.

Q: I. Objective: To gain practical skills in the chemistry laboratory such as measuring volumes using…

A: The volume of a liquid sample can be measured by suitable apparatus such as graduated cylinders,…

Q: Write and balance Neutralization reactions. Acetic acid reacts with sodium bicarbonate to…

A:

Q: at is the purpose of pouring a volumetric solition into a beaker before taking a sample from the…

A: Pouring a volumetric solution into a beaker before sampling is crucial for achieving homogeneity

Q: These are showing as incorrect.  It is sulfite not sulfate. Ty!

A: SO3-2 is known as sulphite ion if one Oxygen is replaced by sulphur we get S2O2-2 , which is known…

Q: The oxidation state of chlorine in manganese(III) chlorite is:

A: The oxidation state of chlorine in manganese(III) chlorite is calculated as follows:

Q: A 10.39 gram sample of chromium is heated in the presence of excess iodine. A metal iodide is formed…

A: Molecular formula: In a molecular formula we describe the number of atoms of all the elements…

Q: You dissolved 3.00 g of calcium chloride and 3.50 g of sodium carbonate in tap water separately,…

A: CaCl2(aq)+Na2CO3(aq)→2NaCl(aq)+CaCO3(s)

Q: An ore is O a mixture of two or more metallic elements. a natural source from which a metal can be…

A: The metals can be extracted from the compounds which are occuring in nature in the earth crest. The…

Q: 2) You are tasked with determining the barium content of a sample containing barium nitrate mixed…

A: Mass percent of elements of a compound is the ratio of mass of element to the mass of whole compound…

Q: What is the justification for an oxidation number that is a fraction?

A: oxidation number is an number assigned to an element in chemical combination which represents the…

Q: iron (II) sulfate and sodium hydroxide precipitate and empirical formula

A: The simplified form of a molecular formula is the empirical formula. It can be simplified by taking…

Q: Mention the difference in concentration in relation to the amount of solute with respect to the…

A: We know that the solution is made by adding solute in solvent in a fixed or unfixed proportion. If…

Q: If no precipitate is observed when hydrochloric acid is added to a solution that contains a mixture…

A: A precipitate is formed when HCl is added to a solution containing mixture of cations when it forms…

Q: The names and chemical formulae of some chemical compounds are written in the first two columns of…

A: The objective of the question is to predict the major species present in the solution if the given…

Q: The same patient took the top off the aspirin bottle and noted that it smelt of vinegar. With a…

A: Hydrolysis of aspirin in presence of moisture:

Q: When ClO3- is converted into ClO4- the Cl changes oxidation state from ...

A: Given : We have to calculate the oxidation state of Cl.

Q: access important values if needed for this question. Be sure to specify states such as (aq) or (s).…

A: The ionic equation is as follows: Mg2+(aq)  +  S2-(aq)   +   2H+(aq)  +  2Cl-(aq)   →   Mg2+(aq)  +…

Q: The great French chemist Antoine Lavoisier discovered the Law of Conservation of Mass in part by…

A:

Q: what volume of a 0.0246 M solution of potassium permanganate are required to titrate 0.441g of…

A: Given: Molarity of solution of potassium permanganate = 0.0246 M Mass of sample = 0.441 g Mass of…

Q: How many grams of Cu(OH)2 will precipitate

A:

Q: A 35.7 mL soloution of MgCl₂ with unknown concentration is titrated to the equivalence point using…

A: 35.7 mL with unknown concentration of MgCl2 titrated to the equivalence point using 15.9 mL of 0.125…

Q: f) C=N (1) LiAlH4 (2) HCI in water

A: Given,The reaction is:f)

Q: A yellow solid is either calcium chromate or potassium chromate. What would you do to tell which…

A:

Q: The number of grams of CI in an AgCl precipitate weighing 0.408 g are:

A:

Q: Provide the molecular, complete, ionic, and net ionic equation for the reaction between aqueous lead…

A:

Q: 4. How many grams of cobalt (III) sulfate can be formed from 20.0g of oxygen?

A: Answer:Number of moles of a compound in any given sample is always equal to the ratio of its mass…

Q: Write the balanced dissociation equation for barium hydroxide. If it does not dissociate, write only…

A: Barium hydroxide ( is a chemical compound known for its ability to dissociate in aqueous solutions.…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.