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Which of these statements correctly explains the effects of the ocean acidification on marine animal shell formation? 1. Increased levels of hydrogen ion in seawater decrease pH of seawater but have no effect on the shell formation of marine organisms. 2. Increased levels of hydrogen ions in seawater combine with carbonate ions that would have been used by marine organisms to make their shells resulting in deformed shells. 3. Increased levels of hydrogen ions in seawater combine with carbonate ions and therefore help in making stronger shells of marine organisms. 4. None of these.

the sig figs is wrong. what will be the correct sig figs?

Consider the following data on some weak acids and weak bases: acid base Bo Ka K, name formula name formula acetic acid HCH,CO, 1.8 × 10 -, methylamine CH;NH, 4.4 x 10 -4 HNO, 4.5 x 10 4 ethylamine C,H,NH, 6.4 x 10 * -4 nitrous acid Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have t the solution that will have the next lowest pH, and so on. solution pH 0.1 M CH3NH3CI choose one v 0.1 M NANO2 choose one v 0.1 M KCH3CO2 choose one v 0.1 M C2H5NH3Br choose one v Explanation Check O 2022 McGraw Hill LLC. All Rights Reserved. T 回 0中g W DELL

Calculate the pH of a 0.10 mol L- solution of hydrazine, N2H4. KŁ for hydrazine is 1.3 x 10-6, Express your answer numerically using two decimal places. • View Available Hint(s) pH = Submit Part E Calculate the pH of a 0.10 mol L-1 solution of hypochlorous acid, HOCI. Ka of HOCI is 3.5 × 108. Express your answer numerically using two decimal places. • View Available Hint(s) ? pH =

Determine the concentration of all species and the pH of the following solutions: H2CO3 0.10 mol/L [Answer; pH=3.67]; Na2CO3 0.10 mol/L [Answer; pH=11.67]; H3PO4 0.10 mol/L [Answer; pH=1.64]; Na3PO4 0.10 mol/L [Answer; pH=12.69] (Gives: carbonic acid, Ka1 = 4.47 x 10 -7, Ka2 = 4.68 x 10 -11            : carbonic acid, Ka1 = 4.47 x 10 -7, Ka2 = 4.68 x 10 -11 , Ka3 = 2,14 x 10 -13)

Consider the following data on some weak acids and weak bases: acid base K. K3 name formula name formula HNO2 -4 nitrous acid 4.5 x 10 NH3 1.8 × 10 ammonia acetic acid HCH;CO, 1.8 × 10 aniline CH;NH, 4.3 x 10-10 Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. solution pH 0.1 M NHẠCI choose one v 0.1 M NANO3 choose one v 0.1 M NACH3CO2 choose one v 0.1 M C5H5NH3B choose one v

Ascorbic acid, H2C6H6O2, is a diprotic acid.  The values of Ka1 and Ka2 are 7.9 × 10–5 and 1.6 × 10–12, respectively.  What is the pH of a 0.80 M solution of ascorbic acid? Provide your answer to two decimal places and without units. Avoid using scientific notation.

Consider the following data on some weak acids and weak bases: acid base Bo K. name formula name formula HNO2 |4.5 x 10 -4 -4 nitrous acid ethylamine C2H5NH, 6.4 x 10 hydrofluoric acid HF - 4 6.8 × 10 hydroxylamine HONH, |1.1 × 10 8. Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. solution pH 0.1 М HONHзBr choose one v 0.1 M C2H5NH3CI choose one v 0.1 M NaI choose one v 0.1 M NaF choose one v ?

Consider the following data on some weak acids and weak bases: name hypochlorous acid nitrous acid acid solution 0.1 M CH3NH3Cl 0.1 M KNO3 0.1 M KCIO 0.1 M NaNO2 formula Ka HCIO 3.0 × 10 HNO₂ 4.5 x 107 Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. X pH -8 choose one ✓ choose one choose one ✓ choose one Ś base K₂ formula methylamine CH3NH₂ 4.4 × 10 4 ammonia NH3 name 1.8 × 10 5 -5

what is the pH of a 0.15 mol/L solution of hypochlorous acid? the answer should be written to two decimal places.

If a sample of a certain solution is determined to have a [H3O+] concentration of 5.61 x 105 moles/liter, what is its pH? Round off your answer to one decimal place. Answer How to enter your answer (opens in new window) Keypad Keyboard Shortcuts

Given that pKa = 3.14 at 25 deg C for HNO2, what is the pH of 0.173 mol L-1 NaNO2(aq) at 25 \deg C? What is the equilibrium concentration of HNO2? pH = Number (Give your answer accurate to 2 decimal places.) [HNO2]eq = Number mol L-1 (Give your answer accurate to 2 signficant figures.)

I Review | Constants | Periodic Table Learning Goal: Part A To calculate pH and use it as a measure of acidity. The pH expresses the molar concentration of hydronium ions in an aqueous solution on a logarithmic scale: What is the pH of an aqueous solution with [H30+] =2x10-14 M? Express the pH numerically using one decimal place. pH = -log[H3O+] • View Available Hint(s) [H3O+] = 10-pH As pH decreases, acidity increases. As pH increases, acidity decreases. • Acidic solution: pH 7 pH = Submit Part B Carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid. What is the molar concentration of H3O+ in a cola that has a pH of 3.120? Express your answer with the appropriate units. • View Available Hint(s) [H3O*] = Value Units Submit

In the laboratory, a general chemistry student measured the pH of a 0.580 M aqueous solution of codeine, C18 H21 O3N to be 10.871. Use the information she obtained to determine the Kb for this base. Kb(experiment)=

4

Over the past 250 years, the average upper-ocean pH near the Pacific Northwest has decreased by about 0.1 units, from about 8.2 to 8.1. This drop in pH corresponds to an increase in acidity of about 30%. When CO2 levels in seawater rise, the availability of carbonate ion, CO32−, makes it more difficult for marine organisms to build and maintain shells and other body parts from calcium carbonate. Calculate H3O+ and OH− concentrations at pH levels of 8.2 and 8.1. Demonstrate by calculations that this decrease in pH corresponds to an increase in acidity of about 30%. Explain the relationship between the pH of seawater and the availability of carbonate ions. Does the change in pH from 8.2 to 8.1 result in an increase or decrease in the availability of carbonate ions?

If the pH of a 1.00 in. rainfall over 1700 miles^2 is 3.40, how many kilograms of sulfuric acid, H2SO4, are present, assuming that it is the only acid contributing to the pH? For sulfuric acid, Ka1 is very large and Ka2 is 0.012.

Consider the following data on some weak acids and weak bases: acid base Ka name formula name formula HNO2 4.5 x 10 pyridine C3H;N 1.7 x 10-9 nitrous acid hypochlorous acid HC1O 3.0 x 10-8 aniline CH;NH, 4.3 x 10-10 Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. solution pH 0.1 M CgH5NH3Br choose one v 0.1 M NaBr choose one v 0.1 M C5H5NHCI choose one v 0.1 M KCIO choose one v

All of the following statements about the pH scale are true EXCEPT O Cola drinks are very acidic. O The difference in concentration between pH10 and pH 12 is 20. O Neutral is pH 7.00 O Blood is slightly basic. O pH 2 is a strong acid.

Consider the following data on some weak acids and weak bases:  *( Picture inserted below)  Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on.

The pH scale was designed to make it convenient to express hydrogen ion concentrations that are small in aqueous solutions. The definiton of pH is in terms of base 10 logarithms. pH = - log [H*] where [H"] is the hydrogen ion concentration. a If the hydrogen ion concentration in a solution is 1.97 x 10 molL, the pH is b. If the pH of a solution is 3.146, the hydrogen ion concentration is mol/L.

If the Hydrogen ion concentration [H+] of certain slurry sample of soil with water is 3.5 x 10-6 M, what is the pH of the soil sample? Is the soil acidic, neutral or alkaline. Write your computation in the reply section. Highlight your final answer.