A compound P is heated in a test tube with sodium hydroxide solution. A red litmuspaper held at the mouth of the test tube turns blue.Which of the following could compound P be?(a) zinc sulphate(b) copper sulphate(c) ferrous sulphate(d) ammonium sulphate
Question
A compound P is heated in a test tube with sodium hydroxide solution. A red litmuspaper held at the mouth of the test tube turns blue.Which of the following could compound P be?(a) zinc sulphate(b) copper sulphate(c) ferrous sulphate(d) ammonium sulphate
Solution
The compound P could be (d) ammonium sulphate.
Here's the step by step explanation:
-
The question states that a red litmus paper turns blue when held at the mouth of the test tube. This indicates that the gas evolved is basic in nature.
-
Among the given options, only ammonium sulphate ((NH4)2SO4) can produce a basic gas when heated with sodium hydroxide (NaOH).
-
The reaction is as follows: (NH4)2SO4 + 2NaOH -> Na2SO4 + 2NH3 + 2H2O. Here, ammonia (NH3) is the gas evolved which is basic in nature and can turn red litmus paper blue.
-
Therefore, compound P could be ammonium sulphate.
Similar Questions
An organic compound (A) with molecular formula C2Cl3O2H is obtained when (B)reacts with Red P and Cl2. The organic compound (B) can be obtained on thereaction of methyl magnesium chloride with dry ice followed by acid hydrolysis.a. Identify A and B
Question 9 of 10675%A scientist adds sodium hydroxide solution to a solution of compound Y. A white precipitate forms. Which of the options below correctly shows the metals that compound Y could contain?
Which of the following represents an incorrect chemical formula of a compound?(A) Al P (B) CaS(C) ZnO (D) MgN
Aqueous solution of which of the following salts can turn red litmus blue?Only one correct answerA.Aluminium chlorideB.Potassium nitrateC.Sodium acetateD.Sodium sulphate
15 An anhydrous white salt, Z, is heated strongly for 30 minutes. A mixture of gases is given off. Thesolid remaining in the test-tube is then dissolved in a small volume of dilute hydrochloric acid. Theaddition of a few drops of dilute sulfuric acid to the test-tube causes a white precipitate to form.Which substance could be Z?A barium carbonateB barium nitrateC magnesium carbonateD magnesium nitrate
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.