It is expressed as moles of a compound per litre of solution Normality is used to know the total number of reactive units in 1 liter of solution Molarity is used to know the total amount of molecules in a 1-liter solution However, they are almost similar but differs in Molarity In order to calculate the pH of a solution you have to use the formula pH= -log or pH = -log ġ0) What is the difference between Molarity and Normality?īoth techniques are used to the amount of chemical present in the solution. Fractionation: This technique is used when the boiling point of chemicals are close to each other in the mixturesĩ) Mention the formula to calculate pH of a solution?.Distillation: This technique is used when the boiling point of chemicals are different in the mixtures.= 1.6 moles of glucose present in 320mL of solutionĨ) Explain what is the difference between fractionation and distillation?īoth methods are used to separate the components present in the solution based on the boiling points. = 5.0 moles glucose/ litre solution X 0.320 L solution Chemistry Interview Questionsħ) How will you calculate how many moles of glucose present in 320 mL of 5.0 M of glucose solution?įirst step: Convert the volume from millilitres to litres It is the amount of substance which consists of the same number of chemical units as there are atoms in exactly 12 gram of pure carbon-12. Mole is the unit used to define the number of chemical substance present in a substance. This will help your buffer to achieve a nearly equivalent amount of acid and conjugate base, so that it will enable to neutralize as much as H+ and OH. While when you select an acid as a buffer solution, try to use an acid that has a pH closed to your desired pH. On the overall pH of the buffer solution, these neutralization reactions will not show much effect. Hydroxide ion will be neutralized by the acid. In buffer when hydrogen ion is added, it will be neutralized by the base in the buffer.
On adding a small amount of base or acid to buffer, its pH hardly changes. It is a blend of a weak acid and its conjugate base or vice versa.
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