For biology im doing an experiment and i decided to investigate the effects of acid rain on plant. Im not sure but i may be using strawberry for my experiment. Im goin to spray the acid rain onto the plant with a sprayer, and then add some to the soil. My question is what ph's should i use for this experiment (im goin to use 4 different ph's)? Im not sure because i do not know what concentration will kill it and which wont. I want my experiment to show obvious data, in other words, i want to see the effects from the acid on the plant, the best efect would be to have one of the acididities kill the pant right at the end, not instantly, but gradually. Im going to use a mixture of nitric acid and sulfuric, and m going to water the plants with this acid rain every three days for 5 weeks. And feedback will be GREATLY appreciated. Thanks!