Hence, the ions with the highest concentrations should probably be H+ ions, and neither Na ions nor SO4 ions.
We all knw tat acidic salt dissociate in water to form H+ ions. It is an acidic salt, as sodium sulphate is Na2SO4. Sodium Sulphate is a salt, formed by Sodium and Sulphuric Acid. Now we knw tat Oxygen is the limiting reactant, therefore, we can say that Moles of water is 0.5 Hence, We knw that oxygen is used up, since there are only 0.25 moles in the given reaction Since we knw tat 2mole of H2 react with 1 mole of O2Ĥmoles of H2, will react with 2 moles of O2. O Level Chemistry: Mole Concepts / Qualitative Analysis.O Level Chemistry: Mole Concepts / Mole Calculations.O Level Chemistry: Mole Concepts / Chemical Calculations.O Levels Chemistry – Selected Exam Questions.O Levels Chemistry Tips Blog Marathon – Day 3.Until the next post! See ya! Related Articles: PPS: If you are not strong in Mole Calculations, and would like to have a quick-fix, you might want to consider the upcoming Mole Calculations Mastery Workshop. PS: Leave your suggested answers and comments in “ Leave A Reply” below. If you are a student that will be taking GCE ‘O’ Level Chemistry Exams or other related end-of-year Chemistry Examinations, the above sets of questions will be interesting for you to solve. How many chloride ions are in contact with each sodium ion in a crystal lattice of sodium chloride? Which ion is present in highest concentration in a 2 mol/dm3 sodium sulfate solution What is the mass of water formed?Īn element of E forms a hydride with the formula EH3 which contains 90% of E by mass. Let’s check out the questions:Ī mixture of 8g of hydrogen gas and 8g of oxygen gas is burnt and the rxn is represented by the equation below. They are questions that are not really difficult to comprehend and score, but you must have strong essential concepts & a good strategy to solve it.
#Mole chemistry calculator series
One of my chemistry student, who is committed to do well in the october’s GCE ‘O’ Levels Chemistry Examinations, had sent me a series of questions related to Mole Calculations. Recently, we have seen more students asking us to discuss more in this chemistry blogsite. Mole Calculations, also commonly known as Mole Concepts & Chemical Calculations had been identified by students and educators alike, to be one #1 Killer Topic in GCE ‘O’ Levels Chemistry, IP Chemistry, IB Chemistry and IGCSE Chemistry.
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