Giving Fidyah Money to the Poor and Authorizing Them to Buy Food With it

Is it valid as expiation for breaking an oath (kaffarat yameen) to buy food for the poor from a restaurant?

Expiation for one who has intercourse during the day in Ramadan and the amount of food to be given

She has to offer expiation for having intercourse during the day in Ramadan with her previous husband, and it is very difficult for her to tell her current husband. Can she offer expiation by feeding poor persons without his knowledge?

He distributed ten meals as expiation for breaking an oath, but he gave two meals to one poor person

Is it acceptable to offer soup or broth to poor people as fidyah [ransom] for not fasting?

Is it acceptable to feed children when feeding the poor as an act of expiation (kafaarah)?

Can a poor child be given food that is given as an act of expiation (kafaarah)? Does the value of the food given as expiation matter, if the person is in a rich country and gives the expiation in a poor country?

Ruling on fasting in expiation for having intercourse during the day in Ramadan, fasting for sixty days without relying on the Islamic calendar

He committed zina during the day in Ramadan, and is afraid that if he fasts two consecutive months he will be exposed to shame, so can he feed sixty poor persons?