Your question has different parts.
First, you're asking whether the Clarity Act would be applied in certain cases.
In the case of Quebec, it currently isn't possible to make this type of statement. There isn't any referendum question. Quebec may put forward this type of question in the future. The government of the day will then need to decide whether the legislation should apply in that case.
Alberta has a referendum question. However, I still need time to consider the application of the Clarity Act.