Homework Answers
In basic solution, H+ would be lost from indicator.
So, Ind- is formed and its color is red.
In acidic solution, H+ would be present on indicator.
So, HInd is formed and its color is blue.
Here we are HIO3 which is acid.
That is we are adding H3O+
For the given equilibrium reaction, H3O+ is product and on adding more product, the equilibrium would shift to left.
Since equilibrium shifts to left HInd is formed and hence solution color would be blue
Answer: B
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11 ** (1 Point) A new indicator, "B.C.Blue (Hind)", is red in bases and blue in...
5 (1 Point) Consider the following equilibrium for an indicator: Hind + H2OH,0* + Indº Which...
5 (1 Point) Consider the following equilibrium for an indicator: Hind + H2OH,0* + Indº Which two species must be of two different colours in order to be used as an indicator? A. Hind and H2O B. Hind and Ind C. H,O* and Ind D. Hind and H,0* E. H2O and Ind ОА НОВ с Ο Ε
12 (1 Point) Consider the following equilibrium for an acid-base indicator: Hind H+ + Ind K...
12 (1 Point) Consider the following equilibrium for an acid-base indicator: Hind H+ + Ind K = 1.0 x 10-10 Which of the following statements is correct at pH 7.0 ? A. [Ind"] <[HInd] B. [Ind'] = [HInd] C. [Ind] > [HInd] D. [Ind] = [HInd] = [HT] E. KA = [H*] A B Ос OD E
I need help with these questions. Part I.A 1. Why did the indicator initially turn blue...
I
need help with these questions.
Part I.A 1. Why did the indicator initially turn blue when NaOH was added to flask A? Consider equilibrium: Hin + H2O + H2O + In [1 mark] 2. When you left the flask A to stand for several minutes after the addition of NaOH, why did the contents of the flask A slowly change colour back from blue to yellow? Consider equilibriums: Hin + H2O + H30+ + In [2 marks] CO2(g) +...
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Acid, bases and buffers
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Please box answers! Thank
you.
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D Question 4 5 pts 2b) There are 0.10 moles of N2O4 and 0.20 moles of NO 2 present in a 2.0 L container which may react according to: N2O4(g) = 2N028) Kp = 11 What is the value of Qp for the initial gas mixture? a. 4.0 b. 0.20 c. 0.40 d.5.0 . a. b. Consider the following equilibrium systems. Which direction will the reactions shift (reactants or products) when cooled? 200g + O2(g) = 2CO2(g) H2e+12(e)=2HI® H2(g) +126)...
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help on number 3 here is lab we did EXPERIMENT 19 An Analysis of Commercial Antacids...
help on number 3 here is lab we did
EXPERIMENT 19 An Analysis of Commercial Antacids Rolaids Alka Seltzer OBJECTIVES: Determine the per gram neutralizing ability of a commercial antacio Determine the per gram neutralizing ability of sodium bicarbonate Compare the effectiveness of several antacids. INTRODUCTION: "How do you spell relief two hecimie The parietal cells in the stomach secrete sufficient hydrochloric aci 0.10 M The flow of HCl increases when food enters the stomach and so acid secrete sufficient...
A chemistry teacher needs to make 2.30 L of a potassium chloride solution for an experimen...
A chemistry teacher needs to make 2.30 L of a potassium chloride solution for an experimen The concentration of the required solution is 3.10 M. How many grams of KCI will she need to use? 0 7.13 g KCI 0 231 g KCI O 532 g KCI 0.0956 g KCI What is the equation for the ion product constant of water at 25 °C? Kw [H,0+][OH-] [H,O] = 1.00 x 10-14 Kw [H,0+1 [OH-] = 1.00 x 10-14 Kw =...
5 (1 Point) Consider the following equilibrium for an indicator: Hind + H2OH,0* + Indº Which two species must be of two different colours in order to be used as an indicator? A. Hind and H2O B. Hind and Ind C. H,O* and Ind D. Hind and H,0* E. H2O and Ind ОА НОВ с Ο Ε
12 (1 Point) Consider the following equilibrium for an acid-base indicator: Hind H+ + Ind K = 1.0 x 10-10 Which of the following statements is correct at pH 7.0 ? A. [Ind"] <[HInd] B. [Ind'] = [HInd] C. [Ind] > [HInd] D. [Ind] = [HInd] = [HT] E. KA = [H*] A B Ос OD E
I
need help with these questions.
Part I.A 1. Why did the indicator initially turn blue when NaOH was added to flask A? Consider equilibrium: Hin + H2O + H2O + In [1 mark] 2. When you left the flask A to stand for several minutes after the addition of NaOH, why did the contents of the flask A slowly change colour back from blue to yellow? Consider equilibriums: Hin + H2O + H30+ + In [2 marks] CO2(g) +...
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...
Please box answers! Thank
you.
11. Monetary policy and the LM curve Aa Aa The following graph shows the demand and supply of real money balances in a hypothetical economy. Use the black point (X point) to indicate the equilibrium in this market. Dashed drop lines will automatically extend to both axes. REAL INTEREST RATE [Percent) 10 Equilibrium Supply New Supply New Equilibrium Demand 3 0 10 20 30 40 50 60 70 80 90 100 REAL MONEY BALANCES Help...
D Question 4 5 pts 2b) There are 0.10 moles of N2O4 and 0.20 moles of NO 2 present in a 2.0 L container which may react according to: N2O4(g) = 2N028) Kp = 11 What is the value of Qp for the initial gas mixture? a. 4.0 b. 0.20 c. 0.40 d.5.0 . a. b. Consider the following equilibrium systems. Which direction will the reactions shift (reactants or products) when cooled? 200g + O2(g) = 2CO2(g) H2e+12(e)=2HI® H2(g) +126)...
All changes saved A Point of Release Equilibrium Position - Equilibrium- Position Point of A sphere of mass mi, which is attached to a spring, is displaced downward from its equilibrium position as shown above left and released from rest. A sphere of mass m2, which is suspended from a string of length I, is displaced to the right as shown above right and released from rest so that it swings as a simple pendulum with small amplitude. Assume...
help on number 3 here is lab we did
EXPERIMENT 19 An Analysis of Commercial Antacids Rolaids Alka Seltzer OBJECTIVES: Determine the per gram neutralizing ability of a commercial antacio Determine the per gram neutralizing ability of sodium bicarbonate Compare the effectiveness of several antacids. INTRODUCTION: "How do you spell relief two hecimie The parietal cells in the stomach secrete sufficient hydrochloric aci 0.10 M The flow of HCl increases when food enters the stomach and so acid secrete sufficient...
A chemistry teacher needs to make 2.30 L of a potassium chloride solution for an experimen The concentration of the required solution is 3.10 M. How many grams of KCI will she need to use? 0 7.13 g KCI 0 231 g KCI O 532 g KCI 0.0956 g KCI What is the equation for the ion product constant of water at 25 °C? Kw [H,0+][OH-] [H,O] = 1.00 x 10-14 Kw [H,0+1 [OH-] = 1.00 x 10-14 Kw =...
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