est Virginia Northern Community College - CHEM 108-Summer17-BROWN Activities and

Question

est Virginia Northern Community College - CHEM 108-Summer17-BROWN Activities and Due Dates Final Exam 6/30/2017 11:55 PM Grade Periodic Table uestion 7 of 55 Sapling Learning Map d You have three solutions: HIag), HCN(ag), and KOH(ag), but you don't know which is which, so you test each with litmus paper. In addition, you use each solution to complete the electrical circuit for a light bulb. The results are are shown in the table below Complete this table with the identity of each solution Solution Litmus paper Light bulb Identity HCN red blue red dim bright bright Hi PreviousNext Save And Ext ning Inc about us careers privac

Explanation / Answer

Litmus paper is used to test the pH of the solution . The blue litmus strip turns red on contact with acid and the red litmus paper turns blue on contact with base.

So the A must be an acid , as the colour of litmus is red , and since the light bulb intensity is dim , so it must be a weak acid that does not dissociate completely , so the identity of A is HCN

In B , the litmus is blue , so the solution must be basic , and the light bulb intensity is bright , so that means a strong base that is KOH.

In C , the litmus is red , so the solution must be acidic , and the light bulb intensity is bright , so the solution must be strongly acidic , that means HI.

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.