# Author: THE CATALYST

## This question on pH will shock you.

LET’S SEE YOUR STRENGHT ON pH CALCULATION.QUESTION.Calculate the pH of a solution of CH3COOH whose acid dissociation constant value is given as 1.84×10^-5 and 250cmยณ of the solution contains 12g of the acid.

Continue Reading## WHAT DO YOU THINK WAS RESPONSIBLE FOR YOUR LACK OF DESIRE TO LOVE CHEMISTRY IN SEC. SCH?

LET’S SHARE OUR VIEWS ON THIS.Which of these factors do you feel that hindered you from understanding chemistry perfectly will in your secondary school days?Post your view into the COMMENT BOX(A). I never like science

Continue Reading## SOLUTION TO THE 19TH MAY 2020 QUIZ QUESTION BY CATALYST.

*SOLUTIONS TO THE MAY 19TH 2020 CATALYST ONLINE QUIZ QUESTIONS*…๐๐ผ๐๐ผ๐๐ผ๐๐ผ๐๐ผ๐๐ผ๐๐ผNUMBER ONE…๐๐ผAnother name for water (H2O) is hydrogen oxideANSWER๐๐ผ๐๐ผThe conjugate acid of water is H3O^+๐๐ผ๐๐ผ๐๐ผ๐๐ผNUMBER TWO…๐๐ผANSWER๐๐ผ ๐๐ผ water must be present.๐๐ผ๐๐ผ๐๐ผ๐๐ผNUMBER THREE…๐๐ผANSWER๐๐ผ๐๐ผBRONSTED_LOWRY theory.๐๐ผ๐๐ผ๐๐ผ๐๐ผNUMBER FOUR…๐๐ผANSWER๐๐ผ๐๐ผ A supersaturated

Continue Reading## NOTE ON CONJUGATE ACIDS-BASES AND BASICITY.

CONJUGATE ACID AND CONJUGATE BASE. *Now, let us take a look at CONJUGATE ACIDS and CONJUGATE BASES* First, let’s us know what ย *conjugate of an acid* means and what *conjugate of a base means. *When

Continue Reading## QUIZ ON SOLUTIONS, SOLUBILITY, ACID-BASE THEORY.

*CATALYST’s QUIZ*.๐๐ผTuesday, 19th may 2020.๐๐ผ๐๐ผ๐๐ผ๐๐ผINSTRUCTION.POST YOUR ANSWERS INTO THE COMMENT BOX.Show your working on question number 5.QUESTION 1._____ is the conjugate acid of hydrogen oxide ?๐๐ผ๐๐ผ๐๐ผ๐๐ผQUESTION 2._____ is the problem associated with Arrhenius’ theory of

Continue Reading## NOTE ON ACID and BASE THEORY.

THEORY OF ACID AND BASE.In our next class, we will discuss the calculation part.First, let us begin with the definitions of acids and bases.You should know that we have many different definitions for an *ACID*

Continue Reading## FOUR QUESTIONS ON ACID-BASE CONJUGATES.

DROP YOUR ANSWERS INTO THE COMMENT BOX…Make sure you indicate your name or your nickname on your own answers.๐๐ผ๐๐ผ๐๐ผ๐๐ผ๐๐ผ๐๐ผ๐๐ผQUESTION 1…๐๐ผwhat is the conjugate acid of H2PO4^โ ?(A). H3PO4^โ(B). H2PO4โ(C). H3PO4(D). H3PO4^+QUESTION 2…๐๐ผFrom the equation below๐๐ผ,

Continue Reading## ONE QUESTION ON STOICHIOMETRY.

TRY TO SOLVE THIS PROBLEM ON STOICHIOMETRY.QUESTIONHow many grams of solid barium sulphate is formed, when 25ml of 0.160M of BaCl2 reacts with 68ml of 0.055M of Na2SO4 ?(A). 87g(B). 8.7g(C). 0.87g(D). None

Continue Reading## SOLUTION TO MOLARITY OF SALT PRODUCED IN A REACTION

HERE IS THE DETAILED SOLUTION.QUESTION๐๐ผ๐๐ผ๐๐ผWhat is the molarity of the salt produced in the reaction of 200ml of 0.1M HCl with 100ml of 0.5M KOH ?*SOLUTION*๐๐ผ๐๐ผ๐๐ผ๐๐ผTHE REACTION FOR THE EQUATION๐๐ผHCl + KOH–> KCl+H20The salt formed

Continue Reading## THEORY QUESTIONS ON ACIDS, BASES, pH and pOH.

BELOW ARE SOME THEORY QUESTIONS ON ACIDS, BASES, pH and pOH OF SOLUTIONS…๐๐ผSubmit your answers into the COMMENT BOX.QUESTION ONEWho among the following is not among the major contributors of theories of acids and basis?(A).

Continue Reading## SOLUTION TO ONE Ksp QUESTION.

SOLUTION TO THE Ksp QUESTION.The compound given is๐๐ผ Ca5(PO4)3OH.We are asked to find the SOLUBILITY PRODUCT CONSTANT of the compound, which means Ksp value.As you know, we need to generate the formula for the Ksp

Continue Reading## Ksp ASSIGNMENT.

Can you try your strength on Ksp with this?QUESTIONCalculate the solubility product constant value (Ksp) for the compound Ca5(PO4)3OH, given that it’s solubility is 8.82×10-ยน mol/dmยณ at a certain condition.Goodluck…

Continue Reading## Ksp CALCULATIONS NOTE

NOTE ON Ksp CALCULATIONS.*In our last class, we discussed the theory section of SOLUBILITY PRODUCT CONSTANT (Ksp)*Tonight, we will learn the calculation part of *Ksp*NOTE๐๐ผ๐๐ผKsp means๐๐ผ*SOLUBILITY PRODUCT CONSTANT* There are several different formulae for *Ksp* calculations.The

Continue Reading## 3 QUESTIONS ON Ksp CALCULATIONS

SOLVE THESE 3 Ksp QUESTIONS AND POST YOUR CORRECT OPTIONS IN THE COMMENT BOX.*QUESTION 1.*Calculate the solubility product constant(Ksp) of Ca(OH)2 whose molar solubility is given as 6.875×10-ยณmol/dmยณ.(A). 1.3×10^6(B). 1.3×10^-6(C). 1.3×10^-4(D). 1.3×10^4*QUESTION 2*.What is the

Continue Reading## NOTE ON SOLUBILITY.

HERE IS THE FUNDAMENTAL NOTE ON SOLUBILITY.We will be discussing๐๐ผ *SOLUBILITY* and *SOLUBILITY PRODUCT CONSTANT(Ksp)* Let’s start with๐๐ผ ๐๐ผ *SOLUBILITY* When we talk about solubility of a substance, we talk about the extent at which a solute can

Continue Reading## THE CATALYST’s SOLUTIONS TO SOLUBILITY QUESTIONS.

HERE ARE THE SOLUTIONS TO THE SOLUBILITY QUSTIONS.SOLUTIONS TO SOLUBILITY QUESTIONS..๐๐ผ๐๐ผ๐๐ผNUMBER ONE๐๐ผVol = 150mlMass = 9.32gMolar mass of MgCl2 = Mg + 2(Cl) = 24 + 2(35.5)

Continue Reading## CATALYST’s QUESTIONS ON SOLUBILITY.

QUESTION NUMBERS 4 AND 5 MAY SHOCK YOU.*INSTRUCTION*Please post only the correct option on each question.Post your answers into the COMMENT BOX. Remember to indicate your name or your nickname on top of your answers

Continue Reading## THE CATALYST’s NOTE ON *SOLUTIONS*

YOU CAN NOW UNDERSTAND THIS TOPIC BETTER HERE.Good evening my friends and *welcome to our tonight’s online chemistry class*.*First, I have to quickly summarize *SOLUTIONS*I will not take too much time on *SOLUTIONS* because I

Continue Reading## THE CATALYST’s PRACTICE QUESTIONS ON SOLUBILITY AND Ksp

Question numbers 8 and 10 may shock you…๐*๐๐ผQUESTION 1๐๐ผ*True or false ?Some salts are 100% solububle in water while some are 100% insoluble in water?(A). True (B). False*๐๐ผQUESTION 2๐๐ผ*What is responsible for the solubility of

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