How much trichloride is needed to raise the chlorine level by 1 ppm in 10,000 gallons of water?

To determine how much trichlor (trichloroisocyanuric acid) is needed to raise the chlorine level by 1 ppm in 10,000 gallons of water, it's important to understand the relationship between the chemical concentration and the volume of water.

Trichlor is commonly used for chlorination in swimming pools due to its stability and high chlorine concentration. Generally, adding 1 ounce of trichlor to 10,000 gallons of water will raise the chlorine level by approximately 0.6 ppm. Therefore, to achieve a 1 ppm increase, more than 1 ounce is required.

Calculating precisely, since 1 ounce raises the level by 0.6 ppm, to find out how much is needed for an increase of 1 ppm, you can set up a proportion. Approximately 1.67 ounces (1 / 0.6) would be needed to achieve a full 1 ppm raise. This is typically rounded to practical measurements used in pool maintenance.

Based on standard practices and the properties of trichlor, the calculated requirement aligns closely with 1.5 ounces, which is represented in the choice given. Thus, the choice indicating 1 1/2 ounces is the most