Which of the following electrolytes will be most effective in causing the coagulation of a positively charged ferric hydroxide sol ?
Which of the following is most effective in causing the coagulation of ferric hydroxide sol?
Which of the following is a strong electrolyte?
Read the given passage and answers following questions : The particles of colloidal solution possess electrical charge which is responsible for the stability of these solutions. The charge on colloidal particles arises because of selective adsorption of ions which are common with their own lattice. The presence of charge on colloidal particles can be determined with the help of phenomenon known as electrophoresis. However, when some electrolyte is added, the charge on the particles of, dispersed phase gets neutralized and precipitation takes place. This process is also called coagulation. The coagulation is given by Hardy Schulze rules. According to these rules the ions carrying the charge opposite to that of sol particles are effective and coagulating power of an electrolyte is directly proportional to the fourth power of the valency of the ion. Coagulation can also occur by mutual precipitation , by electrophoresis, by persistent dialysis or by heating or cooling. Answer the following questions : Which electrolyte is most effective for coagulating Fe(OH)3 sol?
Which of the following is most effective electrolyte in causing the flocculation of a negatively charged arsenious sulphide solution ?
Which one of the following plasma protiens is involved in coagulation of blood?
Which of the following electrolyte requires maximum concentration to cause coagulation of As_2S_3 sol ?
Out of MgCl_2 and AlCl_3 , which one is more effective in causing coagulation of negatively charged sol and why?
Out of BaCl_2 and KCl which one is more effective in causing coagulation of negatively charged colloidal sol. Give reason.
Among the following which is/are correct statement about the metal sulphide sols ? the sol particles are positively charged due to preferential adsorption of metal ions, the sol particles are negatively charged due to preferential adsorption of sulphide ions, the cations of added electrolytes are effective in causing the coagulation of the sol, the sol is due to both the electric charge and hydration of the particles.
