320883
A colloidal solution is subjected to an electric field then colloidal particles move towards anode. The amount of electrolytes of \(\mathrm{BaCl}_{2}, \mathrm{AlCl}_{3}\) and \(\mathrm{NaCl}\) required to coagulate the given colloid is in the order
As ions are moving toward anode i.e. negatively charged colloid \(\begin{aligned}& \text { Coagulation value } \propto \dfrac{1}{\text { cogulating power }} \\& \therefore \mathrm{Na}^{+1}>\mathrm{Ba}^{+2}>\mathrm{Al}^{+3}\end{aligned}\)
CHXII05:SURFACE CHEMISTRY
320884
Given below are a few electrolytes, indicates which one among them will bring about the coagulation of a gold sol quickest and in the least of concentration?
Gold is negative sol so more positive charge coagulates fast.
CHXII05:SURFACE CHEMISTRY
320885
Four different colloids have the following gold number. Which one has its most effective action?
1 10
2 30
3 20
4 40
Explanation:
Higher the gold number of colloid, lesser will be its protective power (gold number is the measure of protective power). Hence, colloid with gold number 10 is most effective amongst the given.
CHXII05:SURFACE CHEMISTRY
320886
Which of the following cations will have minimum flocculation value for arsenic sulphide sol?
1 \(\mathrm{Na}^{+}\)
2 \(\mathrm{Mg}^{2+}\)
3 \(\mathrm{Ca}^{2+}\)
4 \(\mathrm{Al}^{3+}\)
Explanation:
According to Hardy-Schulze rule, higher the coagulating power of an ion, smaller the flocculating value. \(\mathrm{Al}^{3+}>\mathrm{Mg}^{2+}, \mathrm{Ca}^{2+}>\mathrm{Na}^{+}\)
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
CHXII05:SURFACE CHEMISTRY
320883
A colloidal solution is subjected to an electric field then colloidal particles move towards anode. The amount of electrolytes of \(\mathrm{BaCl}_{2}, \mathrm{AlCl}_{3}\) and \(\mathrm{NaCl}\) required to coagulate the given colloid is in the order
As ions are moving toward anode i.e. negatively charged colloid \(\begin{aligned}& \text { Coagulation value } \propto \dfrac{1}{\text { cogulating power }} \\& \therefore \mathrm{Na}^{+1}>\mathrm{Ba}^{+2}>\mathrm{Al}^{+3}\end{aligned}\)
CHXII05:SURFACE CHEMISTRY
320884
Given below are a few electrolytes, indicates which one among them will bring about the coagulation of a gold sol quickest and in the least of concentration?
Gold is negative sol so more positive charge coagulates fast.
CHXII05:SURFACE CHEMISTRY
320885
Four different colloids have the following gold number. Which one has its most effective action?
1 10
2 30
3 20
4 40
Explanation:
Higher the gold number of colloid, lesser will be its protective power (gold number is the measure of protective power). Hence, colloid with gold number 10 is most effective amongst the given.
CHXII05:SURFACE CHEMISTRY
320886
Which of the following cations will have minimum flocculation value for arsenic sulphide sol?
1 \(\mathrm{Na}^{+}\)
2 \(\mathrm{Mg}^{2+}\)
3 \(\mathrm{Ca}^{2+}\)
4 \(\mathrm{Al}^{3+}\)
Explanation:
According to Hardy-Schulze rule, higher the coagulating power of an ion, smaller the flocculating value. \(\mathrm{Al}^{3+}>\mathrm{Mg}^{2+}, \mathrm{Ca}^{2+}>\mathrm{Na}^{+}\)
320883
A colloidal solution is subjected to an electric field then colloidal particles move towards anode. The amount of electrolytes of \(\mathrm{BaCl}_{2}, \mathrm{AlCl}_{3}\) and \(\mathrm{NaCl}\) required to coagulate the given colloid is in the order
As ions are moving toward anode i.e. negatively charged colloid \(\begin{aligned}& \text { Coagulation value } \propto \dfrac{1}{\text { cogulating power }} \\& \therefore \mathrm{Na}^{+1}>\mathrm{Ba}^{+2}>\mathrm{Al}^{+3}\end{aligned}\)
CHXII05:SURFACE CHEMISTRY
320884
Given below are a few electrolytes, indicates which one among them will bring about the coagulation of a gold sol quickest and in the least of concentration?
Gold is negative sol so more positive charge coagulates fast.
CHXII05:SURFACE CHEMISTRY
320885
Four different colloids have the following gold number. Which one has its most effective action?
1 10
2 30
3 20
4 40
Explanation:
Higher the gold number of colloid, lesser will be its protective power (gold number is the measure of protective power). Hence, colloid with gold number 10 is most effective amongst the given.
CHXII05:SURFACE CHEMISTRY
320886
Which of the following cations will have minimum flocculation value for arsenic sulphide sol?
1 \(\mathrm{Na}^{+}\)
2 \(\mathrm{Mg}^{2+}\)
3 \(\mathrm{Ca}^{2+}\)
4 \(\mathrm{Al}^{3+}\)
Explanation:
According to Hardy-Schulze rule, higher the coagulating power of an ion, smaller the flocculating value. \(\mathrm{Al}^{3+}>\mathrm{Mg}^{2+}, \mathrm{Ca}^{2+}>\mathrm{Na}^{+}\)
320883
A colloidal solution is subjected to an electric field then colloidal particles move towards anode. The amount of electrolytes of \(\mathrm{BaCl}_{2}, \mathrm{AlCl}_{3}\) and \(\mathrm{NaCl}\) required to coagulate the given colloid is in the order
As ions are moving toward anode i.e. negatively charged colloid \(\begin{aligned}& \text { Coagulation value } \propto \dfrac{1}{\text { cogulating power }} \\& \therefore \mathrm{Na}^{+1}>\mathrm{Ba}^{+2}>\mathrm{Al}^{+3}\end{aligned}\)
CHXII05:SURFACE CHEMISTRY
320884
Given below are a few electrolytes, indicates which one among them will bring about the coagulation of a gold sol quickest and in the least of concentration?
Gold is negative sol so more positive charge coagulates fast.
CHXII05:SURFACE CHEMISTRY
320885
Four different colloids have the following gold number. Which one has its most effective action?
1 10
2 30
3 20
4 40
Explanation:
Higher the gold number of colloid, lesser will be its protective power (gold number is the measure of protective power). Hence, colloid with gold number 10 is most effective amongst the given.
CHXII05:SURFACE CHEMISTRY
320886
Which of the following cations will have minimum flocculation value for arsenic sulphide sol?
1 \(\mathrm{Na}^{+}\)
2 \(\mathrm{Mg}^{2+}\)
3 \(\mathrm{Ca}^{2+}\)
4 \(\mathrm{Al}^{3+}\)
Explanation:
According to Hardy-Schulze rule, higher the coagulating power of an ion, smaller the flocculating value. \(\mathrm{Al}^{3+}>\mathrm{Mg}^{2+}, \mathrm{Ca}^{2+}>\mathrm{Na}^{+}\)