Question 145Steam Plants - 1st Asst/Chief70% to pass
Phenolphthalein is used as an indicator to test boiler water for _______________.
AI Explanation
The correct answer is C) alkalinity.
Phenolphthalein is a common indicator used to test the alkalinity of boiler water. Alkalinity refers to the ability of the water to neutralize acids, which is an important parameter to monitor in boiler systems. By using phenolphthalein as an indicator, the alkalinity of the boiler water can be determined, allowing operators to make adjustments as needed to maintain proper boiler water chemistry.
The other answer choices are incorrect because they do not represent the primary use of phenolphthalein in boiler water testing. Chloride content, hardness, and hydrazine are other water quality parameters that may be tested, but they are not the main purpose of using phenolphthalein as an indicator.
Related Questions
#143 According to Coast Guard Regulations #144 A dissolved oxygen concentration of 8.0 ppm represents _______________.#146 A sample of boiler water can be chemically tested for alkalinity by initially adding a few drops of phenolphthalein and then slowly titrating the water sample until the _______________.#147 Testing boiler water for chloride content will indicate the amount of _______________.#148 Which of the following would indicate a moderate leak in the desuperheater?