Hello, Can somebody tell me what an acceptable bounce rate would be for keywords in a adwords campaign?
There are a lot of factors that lead to your bounce rate. Bounce rate too high and your quality score drops and you're cpc goes up. Also depends on what kind of site you have. If you have a catalog site selling multiple products a bounce rate of 40% is borderline average, but doesn't mean it's good. If you have a single landing page the bounce rate of 40% is much lower than average, but again it doesn't mean that's good either. Whether it's acceptable rate depends on how much you're bidding and how much you're products sell for.
If by bounce rate you mean average time on your site it would depend on what type of site you have and the quality of content