What will happen if 100g of NaCl is placed in 200mL of water at 70C
When 100 grams of NaCl (sodium chloride) is placed in 200 mL of water at 70°C, a solution will be formed. The NaCl will dissolve in the water, resulting in a homogeneous mixture. Here's how you can determine what will specifically happen in this scenario:
1. Calculate the concentration of the NaCl solution: The concentration of a solution is typically expressed in terms of the mass of solute (NaCl) dissolved in a given volume of solvent (water). In this case, we have 100 grams of NaCl dissolved in 200 mL of water. To calculate the concentration, divide the mass of NaCl by the volume of water:
Concentration = (Mass of NaCl) / (Volume of water)
Concentration = 100 g / 200 mL
2. Convert the volume of water to liters: It's common to express concentrations in terms of liters rather than milliliters. Since 1 liter is equal to 1000 milliliters, divide the volume of water by 1000:
Volume of water (L) = 200 mL / 1000
3. Calculate the concentration of the solution in moles per liter: The concentration can also be expressed in moles per liter (Molarity or M). To do this, divide the mass of NaCl by the molar mass of NaCl, and divide by the volume of water in liters:
Concentration (M) = (Mass of NaCl) / (Molar mass of NaCl) / (Volume of water in liters)
4. Determine solubility: The solubility of NaCl in water is quite high, meaning that at typical temperatures, NaCl readily dissolves in water. Therefore, the NaCl will dissolve completely, resulting in a clear, colorless solution.
5. Consider the temperature: The temperature of the water, in this case, is 70°C. Higher temperatures generally increase the rate of dissolution, so the NaCl should dissolve in the water relatively quickly at this temperature.
In summary, when 100 grams of NaCl is placed in 200 mL of water at 70°C, the NaCl will dissolve in the water to form a clear, colorless solution. The concentration of this solution can be calculated by dividing the mass of NaCl by the volume of water.