Which of the following relationships is true between open square brackets straight H to the power of plus close square brackets and open square brackets OH to the power of minus close square brackets in a solution with a pH of 4? open square brackets H to the power of plus close square brackets greater than open square brackets OH to the power of minus close square brackets open square brackets H to the power of plus close square brackets equals open square brackets OH to the power of minus close square brackets kill disease-causing organisms in the water More information is needed to determine the relationship open square brackets H to the power of plus close square brackets less than open square brackets OH to the power of minus close square brackets