Student : Good morning Miss, how are you ?
Teacher : morning too, I’m fine do you have problem that you
want to say !
Student : yes miss, I want ask about pH in chemical
substance
Teacher : oh, oke oke please talk ?
Student : first, I want ask what is definition of pH Miss ?
Teacher : pH or power
of hydrogen is the acidity that is used
to express the degree of acidity or alkali nity of a solution which is owned by
Student : whether it can be defined, Miss ?
Teacher : pH can to definition as kalogaritma dissolved
hydrogen (H+) ion activity
Student : oh, that means the hydrogen ion activity
coefficients can’t be measured experimentally, so they are based on theoretical
calculations.
Teacher : yes of caurse, pH scale is not the absolutions
scale. It’s relative to a set of standar solution whose pH was stipulated by
international treaties.
Student : what pH will exchange if I mix acid solution with conjugation
acid Miss
Teacher : oh, if you do that, the pH not change because that
become buffer solution
Student : okay Miss , thank you. Now, I understand about pH
Teacher : you’re welcome, I feel happy if you can understand
fast
Student : see you, Miss
Teacher : see you to in the next class tomorrow.
PH is a measure used to express the acidity of a solution or the concentration of H + ions in solution. So what is the relationship between H + and PH?
BalasHapusIt has been mentioned previously that the acidic nature of a substance is the H + ion. The more H + ions in an acid solution, the acidic the stronger. PH represents the concentration of H + ions in an acid solution. Mathematically formulated as follows:
HapuspH = -log [H+]
Why in the teacher's learning should have an approach to his students?
BalasHapusThe teacher's approach is the process, the way or the approaching actions of a teacher to the learners to create an effective and efficient learning process, in teaching, the teacher must be clever to use the approach wisely and wisely, the teacher's view of the students will determine the attitude and deeds. Every teacher does not always have the same views in assessing students, this will affect the approach that teachers take in teaching.
HapusWhat is the difference between a strong acid PH and a weak acid PH?
BalasHapuspH is a measure of the concentration of hydrogen ions in a solution. Strong acids like hydrochloric acid at the sort of concentrations you normally use in the lab have a pH around 0 to 1. The lower the pH, the higher the concentration of hydrogen ions in the solution.
HapusWhat formula is used to find the pH?
BalasHapusformula of acid
HapuspH = - log [H+]
formula of bases
pOH = - log [OH-]
pH + pOH = 14
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