Husband bought a house prior to marriage, he is the only one on the title, if divorcing would I be liable for the house debt?

Title does not control who gets real property. If the house was a gift to both of you, it belongs to both of you. If the deposit on it was a gift to both the same thing applies. If you can't prove it was a gift to both of you then you are entitled to basically one-half of all mortgage payments and improvement payments made on the house during your marriage. Get a lawyer to protect your rights on this issue.

Not to the bank, but perhaps in the divorce judgment. Get counsel.

Has it been the marital home? If so, it is probably community property, so you would be liable for the debt through the divorce but not to the mortgage company. However, you are also entitled to one-half the value. Assuming there is equity in the home, you should be paid one-half of the equity and would not have to worry about the debt.

Unless you are awarded the house, you would not be responsible for the debt.