Table of Contents
How do you make a salt solution of different concentrations?
To make a 1% salt solution, you could use a 100 ml bottle, add exactly 1 gram of salt (use your electronic balance) to your bottle, and bring the water volume up to 100 ml. To make a 0.1% solution, add 1 gram of salt to 1000 ml of water (or add 0.1 g salt to 100 ml of water).
How do you make a solution with different pH?
Pure or distilled water has a pH level of 7, which means it is neutral. If you want to increase the pH of water, you must add an alkaline substance, such as baking powder, to it. If you want to decrease the pH of water, you add an acidic substance, such as lemon juice, to it.
How do you test pH?
pH Testing Strips The strength of the acids and bases on each bar differs. Collect a sample of liquid in a clean container, ensuring the sample is deep enough to cover the testing strip. Dip a strip into the sample for a few seconds and wait for the indicator bars on the paper to change color.
How do you identify a salt?
There is a certain basic procedure to identify a salt that can be followed.
- Look at the Appearance of the Compound.
- Check the Effect of Heating.
- Conduct a Flame Test.
- Test Its Reaction with Hydrochloric Acid.
- Note Its Solubility in Water.
- Sieve analysis.
- Moisture analysis.
How will you identify a saturated solution?
Degree of saturation refers to the amount of solute dissolved in a solvent at a certain temperature. If the solvent could dissolve more solute than is present, the solution is unsaturated. If the solvent has dissolved the maximum amount of solute possible (at that temperature), the solution is saturated.
How can you determine the solute concentration inside a living cell?
Based on what you learned from your experiment, how could you determine the solute concentration inside a living cell? Place a cell in a solution and measure Delta mass. What factors determine the rate and direction of osmosis? Steepness of the gradient, electrical gradient.
How do you find the pH of two combined solutions?
For example, if the components of a two-acid solution provide 0.025 and 0.015 mol of hydrogen ions (H+), respectively, and the mixed solution has a volume of 200 ml, the concentration will be 0.040 mol divided by 200 ml – or 0.0002 mol of H+. The -log of this concentration, and the pH, would then be 3.699.
What does the pH indicate?
pH is a measure of how acidic/basic water is. The range goes from 0 – 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water. pH is reported in “logarithmic units”.