A)
Highest pH to low pH arrangement
When strong base pH>11 is there , the universal indicator turns violet
1) universal inficindi turns violet
2) [H+]= 10-9 M
pH = -log(H+)
pH = -log(10-9)
pH = 9
3) red and blue litmus colour remains same
So ph~ 7
4)
[OH-] = 10-9 M
[H+][OH-]= 10-14 M
[H+] = 10-5 M
pH = -log[H+]
pH = -log[10-5]
pH = 5
5)
Universal indicator turns red when solution
pH < 3
B)
Buffer consists of HClO and NaOCl
When base such as NaOH added
The OH- ion is balanced by H+ ion
C)
The bond between metal and non metal is
mostly ionic bond
Ionic bond is formed because of electrostatic attraction between metal and non metal
D)
Option d) correctly represents saturated solution
In saturated solution undissolved solute will be in bottom indicating saturated solution
E)
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estion 14 of 65 > Use the pH lab to rank the solutions by pH. Highest...
I need help with both answers. Thank you.
< Question 29 of 65 > A buffer is prepared by mixing hypochlorous acid (HCIO) and sodium hypochlorite (Nacio). If a strong acid, such as HCl, is added to this buffer, which buffer component neutralizes the additional hydrogen ions (H)? CIO OHCIO. Write a balanced chemical equation for the reaction of the selected buffer component and the hydrogen ion (H+). Do not include physical states. chemical equation:
< Question 1 of 65 > Rank the following solutions from highest pH to lowest pH given the concentration of acidic protons, (H+). soda with a [H] of 0.001 M sodium hydroxide with a H+1 of 1.0 x 10-14 M hydrochloric acid with a [H] of 0.01 M baking soda (sodium bicarbonate) with a [H+of 5.0 x 10 'M pH = 14 pH = 1 Question 1 of 65 > pH = 14 pH = 1 Answer Bank hydrochloric acid...
estion 10 of 65 > Consider the reaction. HF(aq) + KOH(aq) — KF(aq) + H20(1) What is the net ionic equation for the chemical reaction? HF(aq) + K+(aq) + OH(aq) — K+(aq) + F (aq) + H2O(1) O HF(aq) + K+(aq) + OH-(aq) — K+(aq) + F (aq) + H+(1) + OH-(1) O HF(aq) + OH-(aq) —> F-(aq) + H2O(1) HF(aq) + K+(aq) F (aq) + H+(1) HF(aq) + K+(aq) K+(aq) + H2O(1) - 11 of 65 > Calculate either...
Highest pH Lowest pH
< Assignment Score: 986/2300 Resources Ex Give Up? Hint < Question 17 of 23 > Use the pH interactive to order the solutions by pH. Highest pH [OH-] = 10-11 m universal indicator turns the solution red red and blue litmus paper stay the same color universal indicator turns the solution violet H+ = 10-11 M 1096) Lowest pH Answer Bank -1096 -100) 00 delete-
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TABLE 15.5 Acid lonization Constants (K) for Some Monoprotic Weak Acids at 25 °C Acid Formula Structural Formula lonization Reaction К. pk, = -log (2) Chlorous acid HCIO H-0-C=0 1.1 x 10-2 1.96 Stronger acids Nitrous acid HNOZ H-O-NO 5.6 x 10-4 HCIO2(aq) + H2011) = H30* (aq) + CO2 (aq) HNO2(aq) + H20(I) = H30+ (aq) + NO2 (aq) HF(aq) + H20(1) = H30* (aq) + F"(aq) 3.25 Hydrofluoric acid HF H-F 6.3 x 10-4 3.20 O Methanoic acid...
stion 34 of 65 > A gas is in a sealed container with a moveable piston. The original pressure is 113 kPa and the original volume is 0.170 m. If the piston is moved outward to make the volume 0.540 mº, what will the new pressure be? Assume that the temperature of the gas is kept constant 0.0281 kPa O 35.6 kPa 0.00279 kPa 359 kPa Now, suppose that the original conditions remain the same but the piston is moved...
Preparing Buffer Solutions: Calculating the Number of Grams of Conjugate Base Needed Use the table of K values given with this problem to choose the best weak acid to start from for making a buffer that holds the pH of the solution at 8.50. Make your selection so that you maximize the capacity of the buffer. Weak Acid K 1.8 X 10-5 6.5 X 10-5 1.5 X 10-5 You select a 800.0 ml volumetric flask to which you add 8.00...
Acid, bases and buffers
Acids, Bases, and Buffers CHEM& 121 Lab Partner Data Part A Red pH Red Cabbage Test Tube Blue Litmus (color) Solution Juice (color)values (colbr) no reaction 2.890 Magenta 11.37dark green Red blue no reaction 2.700 Magenta lemon juice soft drink drain cleaner no reaction detergent baking soda no reaction red red no raction 3.530 Purple blue 12.56 no reactionno reaction 8.700 dark green 9.350 teal/green Part B Total Number of rops of HCl(aq) Added DI Water...
(1 punt) viethyl orange is an acid-base indicator. In solutions of pH <3.1 it is red (absorbs around 550nm), and in solutions of pH > 4.4 it is yellow (absorbs around 650nm). Identify which structure is fed and which is yellow. Draw at least one resonance structure that helps to support your decision. 5. (1 point) A solution of 4-methyl-3-penten-2-one in ethanol shows an absorbance of 0.52 at 236 nm in a cell with a 1.00 cm light path. Its...