Ethylene glycol, C2H6O2, is the principal constituent of auto-mob...

Question

Ethylene glycol, C2H6O2, is the principal constituent of auto-mobile antifreeze. If the density of a 40.0 mass % solution of ethylene glycol in water is 1.0514 g/mL at 20 °C, what is the molarity?

Accepted Answer

hey everyone, we're told that sodium hypochlorite is a component of household bleach the density of a 14% by mass of sodium hypochlorite solution is 1.21 g per cubic centimeters at 20 degrees Celsius calculate the polarity of the solution. Looking at our questions them, they provided us with 14.0% by mass of our solution, Which essentially tells us that we have 14.0 g of sodium hypochlorite In 100 g of solution. Since our percentage essentially tells us that this is going to be out of 100. Now to calculate our polarity, we need to calculate for our moles of sodium hypochlorite and our volume of solution, starting with our moles of sodium hypochlorite, we have 14.0 g of sodium hypochlorite Using sodium hypochlorite, smaller mass. We know that one mole of sodium hypochlorite is going to contain 74.44 g of sodium hypochlorite. So when we calculate this out, we end up with 0.1881 mole of sodium hypochlorite. Now to calculate our volume of solution to calculate our volume, we know that we had 100 g of solution. And using the density that they provided us with we know that we have 1. g or one cc and we know that one cc is equivalent to one millimeter. And since Polarity has volume and leaders, we need to convert our male leaders into leaders now we know that we have 10 to the 3rd ml per one leader. So when we calculate this out and cancel out all of our units, we end up with a volume of 0.08-6 L. Now to calculate our polarity to calculate our polarity, we're going to take our moles of 0.1881 mole of sodium hypochlorite And we're going to divide that by our volume, which we just calculated for which is 0.08- L calculating this out, we end up with a polarity of 2.28 molar, which is going to be our final answer. Now, I hope that made sense and let us know if you have any questions.

Ethylene glycol, C2H6O2, is the principal constituent of auto-mobile antifreeze. If the density of a 40.0 mass % solution of ethylene glycol in water is 1.0514 g/mL at 20 °C, what is the molarity?

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