Thanks for your question.
If you are to divorce then all the assets and debts of the marriage, both yours and hers, are included in a notional matrimonial asset pool. You and your wife would then negotiate a settlement over those assets, what you would each be entitled to depends on if there are minor children of the marriage who are to reside with one resident parent or (to a much lesser extent) if there is a large disparity between earning capacities of the parties or where one requires more in order to cope with the financial burden of living with a health condition
If you cannot negotiate a settlement then either party can involved the courts in order to determine what is a fair split of the assets.
So, although the land is in your name only and you a free to sell it and receive the proceeds of sale your wife would be able to say that the money you received for the land should be included in the amounts of assets you have.
So although you are not legally obliged to give her 50% of the money you receive for the land, your wife would be able to state that it should be included in the assets you hold when determining what settlement she should receive in divorce.
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