Challenging Mole Concept Problem

Comments

Post a Comment

Popular posts from this blog

* Tips for 2024 O Level Chemistry Students

[Updated in 2023] Hi all,   Welcome to my international Chemistry blog. .  :)   You are free to look around and find information that you may use in your course of study. My O and A levels Chemistry blogs have hit more than 1 million pageviews as on November 2023. Thank you readers for your support!! I am so happy and humbled by this experience. I am honored to serve you as we continue on life's journey..   For 2023 Secondary 3 students under the new Chemistry syllabus, students may wish to get a hold of the older Chemistry Matters 2nd edition written by Tan Yin Toon, because the latest 3rd edition textbook by Marc Chang and other authors, is not written as rigorously as the 2nd edition. Students may like to refer to the 2nd edition Chemistry Matters textbook if the explanations in the 3rd edition are not lucid. Students who read the latest Chemistry textbook may like to read it when they are on a full stomach, because this textbook has many references to food.   For
Read more

O level Acids and Bases MCQ

Acids and Bases 1. Which one of the following can be added to lemon juice to increase its pH? A lime juice B baking powder C concentrated hydrochloric acid D ethanoic acid 2. Which one of the following can react with both acids and alkalis? A sulphur dioxide B carbon monoxide C zinc oxide D sodium oxide 3. Which one of the following has the highest pH? Aqueous ammonia is a weak alkali while sodium hydroxide is a strong alkali. A 1.00 mol/dm3 aqueous ammonia B 2.00 mol/dm3 aqueous ammonia C 1.50 mol/dm3 sodium hydroxide D 5.00 mol/dm3 ethanoic acid 4. Which one of the following acids require the largest volume of 1.00 mol/dm3 potassium hydroxide to neutralize? A 1.50 dm3 0.20 mol/dm3 HCl B 1.00 dm3 0.50 mol/dm3 H3PO4 C 1.00 dm3 1.00 mol/dm3 HCl D 1.00 dm3 1.30 mol/dm3 CH3COOH 5. What volume of 1.00 mol/dm3 rubidium hydroxide, RbOH, is required to neutralize 25.0 cm3 of 0.500 mol/dm3 hydrochloric acid? A 12.5 cm3 B 25.0 cm3 C
Read more