A student prepared solutions of (i) an acid and (ii) a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since both the solutions are colourless how will she distinguish between the two ?
A student prepared solutions of (i) an acid and (ii) a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since both the solutions are colourless how will she distinguish between the two ?
Text Solution
AI Generated Solution
To distinguish between the two colorless solutions of an acid and a base without using litmus paper, the student can follow these steps:
### Step-by-Step Solution:
1. **Select an Indicator**: The student should choose a suitable pH indicator that can help identify whether a solution is acidic or basic. Two common options are phenolphthalein and turmeric.
2. **Using Phenolphthalein**:
- **Add Phenolphthalein**: The student should take a small amount of each solution and add a few drops of phenolphthalein to each beaker.
...
Similar Questions
Explore conceptually related problems
Dilute hydrochloric acid and dilute sulphuric acid are both colourless solutions. How will the addition of barium chloride solution to each help to distinguish between the two ?
Both dilute hydrochloric acid and dilute sulphuric acid are colourless solutions. How will the addition of barium chloride solution to each help to distinguish between the two?
You are provided the solutions of sodium hydroxide (A), hydrochloric acid (B), sodium chloride ( C) and phenolphthalein (P) separately. All the solutions are colourless. How will you identify the solutions of acid, base and salt?
Two solutions of KNO_(3) and CH_(3)COOH are prepared separately. The molarity of both is 0.1 M and osmotic pressure is P_(1) and P_(2) , respectively. The correct relationship between the osmotic pressure is
A coloured solution known to contain two metal ions, was treated with excedss cold sodium hydroxide solution. When filtered a whitish solid, slowly changing to brown, was retained on the filter paper and a colourless solution collected as the filtrate. dropwise addition of hydrochloric acid to the filtrate produced a white ppt. which dissolved in excess acid. treatment of the residue on filter paper with a solution of strong oxidier produced a reddishh-violet solution.. indicate any pairs of ions:
There are two beakers (I) having pure volatile solvent and (II) having volatile solvent and non-volatile solute. If both beakers are placed together in a closed container then:
There are two beakers (I) having pure volatile solvent and (II) having volatile solvent and non-volatile solute. If both beakers are placed together in a closed container then:
Salts M, N, O, P and Q undergo reactiom (i) to (v) respectively. Identify the cation present in these salts on the basis of these reaction. Tabulate your answer in the format given below. 1. When sodium hydroxide solution is added to the salt M, and heated strongly a colourless gas with a pungent smell is evolved which turm red litmus paper blue and gives dense white fumes with a moist glass rod with hydrochloric acid. 2. Addition of dilute hydrochloric acid to a solution of N gives a thick white precipitate which is soluble in hot water. 3. When ammonium hydroxide solution is added to the solution of 0 a light blue precipitate is obtained which is soluble in excess of ammonium hydroxide to form an inteme deep blue solution. 4. When ammonium hydroxide solution is added to the solution of P reddish brown (mustard colour) precipitate is obtained which ,is insoluble even in the excess of ammonium hydroxide solution. 5. When sodium hydroxide solution is added to the solution of Q a which coloured gelatinous precipitate is obtained which is soluble in excess of sodium hydroxide to form a clear solution
A student is running at her top speed of 5.0 m s^(-1) , to catch a bus, which is stopped at the bus stop. When the student is still 40.0m from the bus, it starts to pull away, moving with a constant acceleration of 0.2 m s^(-2) . a For how much time and what distance does the student have to run at 5.0 m s^(-1) before she overtakes the bus? b. When she reached the bus, how fast was the bus travelling? c. Sketch an x-t graph for bothe the student and the bus. d. Teh equations uou used in part (a)to find the time have a second solution, corresponding to a later time for which the student and the bus are again at thesame place if they continue their specified motions. Explain the significance of this second solution. How fast is the bus travelling at this point? e. If the student s top speed is 3.5 m s^(-1), will she catch the bus? f. What is the minimum speed the student must have to just catch up with the bus?For what time and what distance dies she have to run in that case?
When an aqueous solution of a colourless mixture of two salts is treated with a drop of chlorine water, the solution becomes brown. Some chloroform is added to the brown solution and the resulting mixture is shaken wel. The chloroform layer becomes violet. (ii) When chlorine water is again added dropwise to the above mixture, the chloroform layer becomes colourless. (iii) On being heated with solid K_(2)Cr_(2)O_(7) and concentrated H_(2)SO_(4) , the solid mixture gives vapours of a dark colour which form a yellow solution with aqueous NaOH. On acidification with acetic acid followed by treatment with lead acetate, the yellow solution gives a yellow precipitate. (iv) When boiled with an NaOH solution, the mixture gives a gas that produces thick white fumes with HCl vapours and turns nessler's reagent brown. the mixture does not respond to any other test for cations. (v) The mixture, on being heated, gets completely sublimed. Q. The brown solutin obtained in (i) is due to:
Recommended Questions
- A student prepared solutions of (i) an acid and (ii) a base in two sep...
Text Solution
|
- A student prepared solutions of NaCl, Na(2)CO(3) and NH(4)Cl . He put ...
Text Solution
|
- How will you distinguish an acid from a base when no litmus paper is a...
Text Solution
|
- लिटमस पत्र का अम्लीय व क्षारीय विलयनों में रंग बताइये ।
Text Solution
|
- In SHE, the pH of the acid solution
Text Solution
|
- A student prepared solution of (i) acid and (ii) base in two separate ...
Text Solution
|
- (i) Draw a labelled diagram to show the preparation of hydrogen chlori...
Text Solution
|
- एक विद्यार्थी ने दो पृथक बीकरों में (i) एक अम्ल तथा (ii) एक क्षार का व...
Text Solution
|
- An acid turns blue litmus paper or solution
Text Solution
|