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 __________.
A
sample color changes from clear to pink
B
entire concentration of chlorides have been neutralized
C
water sample pH reaches 10.5
D
sample color changes from pink to clear
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Question 1 / 205eccefa0bacbc34ba4d46f82
Question 1 of 205eccefa0bacbc34ba4d46f82
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 __________.
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 __________.