A 2.5gsample containing As_(2) O_(5) Na_(2) HAsO_(3) and inert substance is dissolved in water and the pH is adjusted to neutralwith excessof NaHCO_(3). The solution is titrated with 0.15M I_(2) solution, requiring11.3 mL to just reach the end point, then the solutionis acidified with HCl, KI is added and the liberated iodine requires41.2 mL fo 0.015M Na_(2)S_(2)O_(3) under basic conditionswhere it converts to SO_(4)^(2-). Calculate per cent compositon of mixture.

A 2.5gsample containing As_(2) O_(5) Na_(2) HAsO_(3) and inert substan

1.	A 2.5gsample containing As_(2) O_(5) Na_(2) HAsO_(3) and inert substance is dissolved in water and the pH is adjusted to neutralwith excessof NaHCO_(3). The solution is titrated with 0.15M I_(2) solution, requiring11.3 mL to just reach the end point, then the solutionis acidified with HCl, KI is added and the liberated iodine requires41.2 mL fo 0.015M Na_(2)S_(2)O_(3) under basic conditionswhere it converts to SO_(4)^(2-). Calculate per cent compositon of mixture.
Answer» <html><body><p><br/></p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :`Na_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>) HAsO_(3) = 11.53%, As_(2)O_(<a href="https://interviewquestions.tuteehub.com/tag/5-319454" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a>) = 3.57%` <br/> inert <a href="https://interviewquestions.tuteehub.com/tag/material-1089170" style="font-weight:bold;" target="_blank" title="Click to know more about MATERIAL">MATERIAL</a> `= 84.9%`</body></html>