Is it permissible to swear a false oath in order to reconcile between two disputing parties?

She vowed to give her jewellery in charity – can she give it to her sisters?

She vowed to give all her wealth in charity but she owes zakaah. What should she do?

He vowed to break the fast in Ramadaan

She vowed to do Hajj but she has not done the obligatory Hajj

He vowed to marry a certain girl then he did not fulfil his vow

Is it permissible to give money instead of a vow, ‘aqeeqah or waleemah?

He owes many expiations for breaking oaths (kafaarat yameen) but he does not know what some of them are

He owes many expiations for breaking oaths (kafaarat yameen), and he does not know how to do it

If he fulfils his vow, is it permissible for him to eat from it?