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A pH meter equipped with an electrode that respond to (H3O+ in a solution/OH- in a solution/ Voltage of solution / or all of them)?
pH meter is used to measure the pH of a solution.pH stands for potent of Hydrogen ion in a solution.However pH meter does not directly measures it by responding to H3O+ ion in a solution.
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- QUESTION 4 When a SBIA021 student measured the pH of 1.0M HCI, the student obtained a pH meter and failed to neither check the condition nor the manner of usage of the instrument. The pH meter reading timed out (Did not give a reading) Which of the following problem explanations is most correct? O The sample in the glass beaker was being swirled vigourously while the electrode was submerged in it for a reading. O The electrode got submerged much deeper into the solution than it should have. All of the above are correct problem explanations O The electrode had long direct contact with the environment and the glass membrane got dry. Click Save and Submit to save and submit. Click Save All Answers to save all answers.Which of the following reactions is an acid-base reaction? A) AGNO:(aq) + KF(aq) → AgF(s) + KNO:(aq) B) NH:(aq) + HF(aq) → NH:"(aq) + -F(aq) C) NO: (aq) + AI(s) → NH3(g) + AIO: (aq) D) CH:(g) + 202(g) - 2H:O(g) + CO:(g)**) How much work is needed to move a proton (hydronium ion) from pH=8 to pH=7?
- In the following acid-base equilibria of weak acids in water, label the acid (A), the base (B), the conjugate acid (CA), and the conjugate base (CB). HCIO, (aq) + H,O(1) = H,O*(aq) + CI0, (aq) H,CO, (aq) + H,O1) – H;O*(aq) + HCO; (aq) Answer Bank H,O(1) + CH;NH†(aq) = CH,NH,(aq) + H;O*(aq) СА А B СВ CH, COOH(aq) + H,O(1) - CH;COO (aq) + H;O*(aq)8) What is the pH of a 0.035 M HNO, solution? HNO; (aq) + HO (1) H30* (aq) + NO3 (aq)6. a) What is the pH of pure water at 35.0 °C? At this temperature Kw = 2.042 x 10-14. b) Based on the information in part a) above, is the self-ionization of water an endothermic or exothermic process? Explain why. c) The net ionic equation for the reaction of a strong acid with a strong base is: H;O*(aq) + OH(aq) → 2 H2O1) What is the equilibrium constant for this reaction at 35.0 °C?
- What is the pH of a grapefruit that contains 0.007 M citric acid solution (CsH2O-)? CH;O;(aq) + H;O(2) = CH;0, (aq) + H3Oʻ(aq) K, = 7.5 x 104 Round your answer to 2 decimal places.8) What is the pH of a 0.035 M HNO, solution? HNO3 (aq) + H,0 (1) H;O* (aq) + NO; (aq)Part A A current of 11.6 A is applied to 1.25 L of a solution of 0.554 mol L H2 (g), which bubbles out of solution. -1 aqueous HBr converting some of the HT(aq) to What is the pH of the solution after 66 minutes? (Assume the volume of solution to be constant.) Express your answer using two decimal places. DAL ΑΣφ pH =
- What is [H3O+] in a solution that has [OH-] = (2.83x10^-6) M? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible.The pH of blood plasma from a patient was found to be 7.1, a life-threatening situation. Calculate the ratio HCO3H;CO3] in this sample of blood plasma. (K, of H2CO3, carbonic acid, is 4.5 × 10-7.) Enter your answer in the provided box. Be sure to round your answer to the correct number of significant figures. [нсо; ] [H;COs]In the following acid-base equilibria of weak acids in water, label the acid (A), the base (B), the conjugate acid (CA), and the conjugate base (CB). HCIO,(aq) + H,O(1) = H,O*(aq) + C1O, (aq) H₂CO3(aq) + H₂O(1) H₂O+ (aq) + HCO3(aq) H,O(1) +CH,NH (aq) = CH,NH,(aq) + H,O*(aq) O CH₂COOH(aq) + H₂O(1) ⇒ CH₂COO¯(aq) + H₂O+ (aq) O B Answer Bank CA A CB