Scene 1 (0s)
The pH Scale. Battery 910 11 12 13 14 1 Lemon 2 Tomato 3 Vinegar Milk Blood Stomach Tablets Soap Drain Cleaner 5 Coffee 6 7 Water Neutral 8 Stomach Acid Acidic Baking Soda Ammonia Solution Bleach Alkaline.
Scene 2 (9s)
Bases and Alkalis. bases eg CuO, znO alkalis eg NaOH, KOH.
Scene 3 (17s)
pH Scale. The pH scale ranges from 0-14. Neutral solutions have a pH value equal to 7. Acidic solutions have a pH value less than 7. Basic solutions have a pH greater than 7..
Scene 4 (30s)
pH Scale.
Scene 5 (35s)
What Is pOH? Definition and Calculation.
Scene 6 (42s)
pH Calculations.
Scene 7 (48s)
Calcutate the pH Of. moles/L. What is a mole?.
Scene 9 (1m 1s)
Calculating pH Example:.
Scene 10 (1m 8s)
Calculating pH Example:.
Scene 11 (1m 13s)
Calculating pH Example:.
Scene 12 (1m 19s)
Calculating pH Example:.
Scene 13 (1m 24s)
Calculating pOH Example:. What is the pH of the 0.0010 M NaOH solution?.
Scene 14 (1m 33s)
Calculating pOH Example:. What is the pH of the 0.0010 M NaOH solution? [OH-] = 0.0010 (or 1.0 X 10-3 M) pOH = - log (0.0010) pOH = 3 pH = 14 – 3 = 11.
Scene 15 (1m 45s)
Practice:.
Scene 16 (1m 51s)
SCIENCE UNDERSTANDING. Acid–base indicators are weak acids or bases where the acidic form is of a different colour from the basic form..
Scene 17 (2m 1s)
Acid-base indicators. Used to indicate whether a solution is acidic, basic or neutral They are made of weak acids or bases that react in the presence of a substance Reaction is indicated by a colour change.
Scene 18 (2m 21s)
Edible pH Indicator Color Changes 10 12 Beets Blueberries Cherries Curry Powder Grape Juice Onion Peach Skin Pear Skin Plum Skin Radish Skin Red Apple Skin Red Cabbage Tomato Turnip Skin.
Scene 19 (2m 30s)
Water A solvent. Pro n-l-ol Another solventl NaOH Sodium h droxide Adjusts the pH Of the indicator solution to perfect colmrs (e.g. green at exoct'y pH 7). o o OH Phenol hthalein •D lucuronide sodium salt Gives universal indicator deep violet colour at very high PH. Made from naphthalene, xylere and phenoå, all of whkh are found in crude oil and coal tar. Meth red This azo dye gives universal indicator its red colour under acidk corxiitions CH3 O g-ONa b CHs CHs H3C 2somL 2.REx. HSC CHs Bromoth 01 blue monosodium salt Gives universal indicator a deep blue colour under alkaline conditims. O CH3 100 H3C o I CH3 OH 01 blue monosodium salt Differentiates low pH and very bow pH by beccyning red at pH 2.16 also yellow at pH 7, which helps to universal indicator solution its green colour at neutral PH..