Home
Class 12
CHEMISTRY
Statements : A colloide gets coagulated ...

Statements : A colloide gets coagulated by addition of an electrolyte . .
Expabnations : The rate of coagultion depends on the magnitude and sing of the charge of the coagulant ion.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, mark (1)

B

If both Assertion & Reason are true but reason is not the correct explanation of the assertion, then mark (2)

C

If Assertion is true statement but Reason is false, then mark (3)

D

If both Assertion and Resson are false statements , then mark (4)

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Coagulation**: Coagulation is the process where colloidal particles aggregate to form larger particles that eventually settle out of the solution as a precipitate. This process is crucial in various applications, including water purification and food processing. **Hint**: Remember that coagulation leads to the formation of larger particles from smaller colloidal particles. 2. **Role of Electrolytes**: The addition of an electrolyte to a colloidal solution is what initiates coagulation. Electrolytes consist of ions that can interact with the charged colloidal particles. **Hint**: Think about how charged ions can neutralize the charges on colloidal particles. 3. **Coagulating Ion**: The specific ion from the electrolyte that neutralizes the charge on the colloidal particles is known as the coagulating ion. This ion is crucial for the coagulation process to occur. **Hint**: Identify which ion in the electrolyte is responsible for neutralizing the charge. 4. **Valency and Coagulation**: The effectiveness of an electrolyte in causing coagulation depends on the valency of the coagulating ion. A higher valency means that the ion can neutralize more charges, leading to a more effective coagulation process. **Hint**: Consider how the charge of the coagulating ion relates to its ability to cause coagulation. 5. **Evaluating the Statements**: - The assertion states that a colloid gets coagulated by the addition of an electrolyte, which is true. - The explanation states that the rate of coagulation depends on the magnitude and sign of the charge of the coagulating ion, which is also true. However, this explanation does not fully explain why the addition of an electrolyte leads to coagulation. **Hint**: Analyze whether the explanation directly supports the assertion or if it provides additional information. 6. **Conclusion**: Since both the assertion and the explanation are true, but the explanation does not serve as the correct reason for the assertion, the correct answer is that both are true but the explanation is not the correct explanation for the assertion. **Final Answer**: The correct option is 2: Both assertion and reason are true, but the reason is not the correct explanation for the assertion. ---
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    AAKASH INSTITUTE ENGLISH|Exercise Assignment Section - B (Questions asked prior to medical Ent . Exams . 2005)|10 Videos

  • STRUCTURE OF ATOM

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT ( SECTION -J) Aakash Challengers Questions|12 Videos

  • TEST 1

    AAKASH INSTITUTE ENGLISH|Exercise EXAMPLE|134 Videos

Similar Questions

Explore conceptually related problems

each question constain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMENT-1: A colloid gets coagulated by addition of an electrolytes. STATEMENT-2: Coagulation depends on the valance and sign of the charge of the coagulant ion.

The capacity of an ion to coagulate a colloidal solution depends on

According to Hardy Schulze rule, the power of coagulation of an ion depends upon………….

Which is not the characteristic of hydrophobic sols? a. They are highly susceptible to coagulation by addition of electrolytes. b. They have nearly the same surface tension and viscosity as that of dispersion medium. c. Their stability is due to both electric charge and salvation of the particles. d. Sol particles can be seen under ultramicroscope.

coagultion is the process by which the dispersed phase of a colloid is made to aggregate and thereby separtate from the continuous phase. The minimum concetration of an eletrolyte in milli-moles per litre of the electrolyte solution which required to cause the caogultion of colloidal sol is called coagution value . therefroe higher is the coagulatings power of effective ion, smaller will be the coagultion value of the electrolyte. coagultion value propto = 1/("coagulating power") the coagulation values of differnt electrolytes are different . this behavious can be easily uderstood by Harby - schulze rule which states. the greater is the valency of the effective ion grreater is its coagulating power," which one had the highest coagulating powe?

coagultion is the process by which the dispersed phase of a colloid is made to aggregate and thereby separtate from the continuous phase. The minimum concetration of an eletrolyte in milli-moles per litre of the electrolyte solution which required to cause the caogultion of colloidal sol is called coagution value . therefroe higher is the coagulatings power of effective ion, smaller will be the coagultion value of the electrolyte. the ability of an ion to bring about coagulation of a given colloid depends upon :

coagultion is the process by which the dispersed phase of a colloid is made to aggregate and thereby separtate from the continuous phase. The minimum concetration of an eletrolyte in milli-moles per litre of the electrolyte solution which required to cause the caogultion of colloidal sol is called coagution value . therefroe higher is the coagulatings power of effective ion, smaller will be the coagultion value of the electrolyte. the coagulation of colloidal particles fo the sol can be caused by :

The ability of ion to bring about coagulation of a given collidal solution depends upon

100mL of a colloidal solution is completely precipitated by addition of 5mL of 1M NaCl solution. Calculate the coagulation value of NaCl .