How do you make 1percent acetic acid in acetonitrile?

To make 1% acetic acid in acetonitrile, you would mix 1 part acetic acid with 99 parts acetonitrile by volume. For example, if you want to make 100mL of 1% acetic acid in acetonitrile, you would mix 1mL of acetic acid with 99mL of acetonitrile. Remember to handle acetic acid carefully as it can cause skin and eye irritation.