If 1000 mg of a lyophilic colloid prevents t | vedclass

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(D) The gold number is defined as the minimum amount of a protective colloid in milligrams that prevents the coagulation of $10 \ mL$ of a gold sol wh

Vedclass · Accepted Answer

None

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(D) The gold number is defined as the minimum amount of a protective colloid in milligrams that prevents the coagulation of $10 \ mL$ of a gold sol when $1 \ mL$ of a $10\%$ $NaCl$ solution is added to it.Given that $1000 \ mg$ of the colloid protects $100 \ mL$ of the sol.To find the amount for $10 \ mL$ of the sol,we use the ratio:$	ext{Gold number} = \frac{1000 \ mg}{100 \ mL} 	imes 10 \ mL = 100 \ mg$.Since $100 \ mg$ is not among the given options,the correct answer is $None$.

$i$. Foam	$a$. Smoke
$ii$. Gel	$b$. Cell fluid
$iii$. Aerosol	$c$. Jellies
$iv$. Emulsion	$d$. Rubber
	$e$. Froth
	$f$. Milk

If $1000 \ mg$ of a lyophilic colloid prevents the coagulation of $100 \ mL$ of a lyophobic sol,then the gold number (protective value) is ......... $mg$.

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