1.249g of a sample fo pure BaCO_(3) and impure CaCO_(3) containingsome Cao was treatedwith dil.HCI and it BaCrO_(4) was precipitaate was dissolvbed in dilute H_(2)SO_(4) and with KI solution libetarediodine which required exactly 20mL of 0.05N Na_(2)S_(2) O_(3). Calculate percentage of CaO in the sample.

1.249g of a sample fo pure BaCO_(3) and impure CaCO_(3) containingsome

1.	1.249g of a sample fo pure BaCO_(3) and impure CaCO_(3) containingsome Cao was treatedwith dil.HCI and it BaCrO_(4) was precipitaate was dissolvbed in dilute H_(2)SO_(4) and with KI solution libetarediodine which required exactly 20mL of 0.05N Na_(2)S_(2) O_(3). Calculate percentage of CaO in the sample.
Answer» ANSWER :`14.09%`