A pharmacist dilutes 100ml of Clorox with 1 quart of water Express the concentration of Sodium Hypochlorite in the final dilution as a W/V ratio.
Commercial Clorox containsi5.25% W/V Sodium Hypochlorate:
- a- 1/9
- b- 1/10
- c- 1/100
- d- 1/180
- e- 1/200***
The concentration of Sodium Hypochlorite in the final dilution is 1/200.
Calculation:
- Volume of Clorox: 100 ml
- Volume of water: 1 quart = 946 ml
- Concentration of Sodium Hypochlorite in Clorox: 5.25% W/V
Total volume of the solution:
- Total volume = Volume of Clorox + Volume of water = 100 ml + 946 ml = 1046 ml
- Concentration of Sodium Hypochlorite in the final solution:
- Concentration = (Concentration of Sodium Hypochlorite in Clorox) * (Volume of Clorox) / Total volume
- Concentration = (5.25% W/V) * (100 ml) / (1046 ml) = 0.5019120458891013% W/V
W/V ratio:
- W/V ratio = Mass of Sodium Hypochlorite / Volume of solution
- W/V ratio = (0.5019120458891013% W/V) * 1046 ml = 0.5272374833948006 grams
- W/V ratio = 0.5272374833948006 grams / 1046 ml = **1/200
Therefore, the concentration of Sodium Hypochlorite in the final dilution is 1/200*.
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