The value of Kw at 25 °C is 1.0 × 10-14. At 30 °C, the value of Kw is 1.5×10-14.
a.) Using LeChatelier's principle, predict whether the autoionization of water is exothermic or endothermic.
2 H2O(l) ⇄ H3O+(aq) + OH-(aq)
b.) Calculate [H3O+] and [OH-] in a neutral solution at 30°C.
What are the concentrations of [H3O+] and [OH-] in a neutral solution at 30 °C?
[H3O+] = ???? M
[OH-] = ???? M
The answer 1.225 x 10^-7 is coming up as incorrect. INTERACTIVE EXAMPLE Autoionization of Water The value of Ky at 25 °C is 1.0 x 10-14 At 30 °C, the value of Ky is 1.5*10-14. a.) Using LeChatelier's principle, predict whether the autoionization of water is exothermic or endothermic. 2 H2O(1) = H30+ (aq) + OH- (aq) b.) Calculate [H30*] and [OH-] in a neutral solution at 30°C. HOW DO WE GET THERE? What are the concentrations of [H3O+] and...
5. Which of the following species is amphiprotic in aqueous solution? (a) CH3NH2 c) NH4 (e) HSO (d) F (b) Н:0" 6, Use Table 15.2 (page 529) to decide whether the species on the left or those on the right are favored by the reaction. a. NH4 (aq) + H2PO4" (aq) # NH3(aq) + HsPO b. HCN (aq) + HS(aq) CN" (aq) +H2S c. HCO +OH CO2 H2S d. Al(H20)6 3+ +OH = Al(H20) s2+ OH 7. The equilibrium constant...
7. The equilibrium constant for the auto-ionization of water HO () (aq)OH (aq) is 1.0x 10 at 25°C and 3.8 x 10 at 40C. a. Is the forward process endothermic or exothermic? b. What is the pH of the water at 40 C? c. Based on your calculated pH, is this solution acidic or basic? d. Which of the following statements is consistent with this behavior? i. The autoionization of water is an endothermic reaction i. The autoionization of water...
SIMULATION Kw, Temperature, and Neutral pH 14.0 Temperature: Basic 50 °C Basic 1 → Calculate Clear 1 Neutral pH 7.01 Neutral => Neutral pH = 6.62 Kw=5.8 10-14 Acidic Acidic 0.0 0.0 50.0 Temperature (°C) 100.0 What is the [H3O+] for a neutral solution at this temperature, 50 °C? X mol/L Next (3 of 8) Recheck 5th attempt Since a neutral solution has equal concentrations of H30+ and OH-, we know that [H3O+] = [OH-] = x and Kw =...
3. i). Write the formula of four strong acids and four strong bases. ii). List four factors that affect the strength of an acid. iii). Predict the relative strength of the following compounds: H2O, H2S and H2Se. iv). Which of the following is the stronger acids: CHCICOOH or CHCI-COOH? Explain. v). Al 3* is not a Bronsted acid, Al(H2O)" is. Explain. vi). All Bronsted acids are Lewis acids, but the reverse is not true. Give two examples of two Lewis...
1- Calculating [H+] for Pure Water: In a certain acidic solution at 25 ∘C, [H+] is 100 times greater than [OH −]. What is the value for [OH −] for the solution? In a certain acidic solution at 25 , [] is 100 times greater than [ ]. What is the value for [ ] for the solution? 1.0×10−8 M 1.0×10−7 M 1.0×10−6 M 1.0×10−2 M 1.0×10−9 M 2. ± Acid-Base Relationships in Water: Water ionizes by the equation H2O(l)⇌H+(aq)+OH−(aq)The...
Calculate the pH values of the following solutions. All solutions are prepared in water at 25 ºC unless noted otherwise. Kw = 1.0 × 10−14 = [H3O+ ][OH− ] at 25 ºC The neutral pH of pure water is 7.00 at 25 °C. If the Kw is 1.47×10−14 at 40 °C, calculate the neutral pH of pure water at 40 °C. A neutral pH means the pH of a solution when [H3O+ ] = [OH− ]
(1). At 50 oC, the autoionization constant for pure water, Kw, is 5.48 x 10-14. The H3O+ concentration in pure water at 50 oC is ____ x 10-7 M.
calculate equilibrium dissiociation constant of water help! We know that Kw = 1.0 x 10-14 at 25°C. At 37°C, the [H3O+] in pure water is 1.6 x 10"| M. Calculate the equilibrium dissociation constant of water, Kw, at this temperature. A. 2.6 x 10-14 | CNH-TT H+7: 10 x 10-14 DH = -log(11 B. 1.0 x 10-7 C. 1.0 x 10-14 [1-6x10-?][6.16 *10-8] PH= 6.79 D. 1.6 x 10-7 POH=7. 21
In a 1.0� 10�6 M solution of HNO3(aq) at 25 �C, identify the relative molar amounts of these species from Most to Least: H2O HNO3 H3O NO3 OH