Concept explainers
(a)
Interpretation:
The nature of aqueous solution of tripotassium phosphate salt has to be identified.
Concept Introduction:
Salt hydrolysis: It is the
Type of salt | Nature of aqueous solution |
strong acid–strong base | neutral |
strong acid–weak base | acidic |
weak acid–strong base | basic |
weak acid–weak base | depends on the salt |
(b)
Interpretation:
The nature of aqueous solution of sodium nitrate salt has to be identified.
Concept Introduction:
Salt hydrolysis: It is the chemical reaction of a salt with water to produce hydronium ion or hydroxide ion or both.
Type of salt | Nature of aqueous solution |
strong acid–strong base | neutral |
strong acid–weak base | acidic |
weak acid–strong base | basic |
weak acid–weak base | depends on the salt |
(c)
Interpretation:
The nature of aqueous solution of potassium chloride salt has to be identified.
Concept Introduction:
Salt hydrolysis: It is the chemical reaction of a salt with water to produce hydronium ion or hydroxide ion or both.
Type of salt | Nature of aqueous solution |
strong acid–strong base | neutral |
strong acid–weak base | acidic |
weak acid–strong base | basic |
weak acid–weak base | depends on the salt |
(d)
Interpretation:
The nature of aqueous solution of sodium oxalate salt has to be identified.
Concept Introduction:
Salt hydrolysis: It is the chemical reaction of a salt with water to produce hydronium ion or hydroxide ion or both.
Type of salt | Nature of aqueous solution |
strong acid–strong base | neutral |
strong acid–weak base | acidic |
weak acid–strong base | basic |
weak acid–weak base | depends on the salt |
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Bundle: General, Organic, and Biological Chemistry, 7th + OWLv2 Quick Prep for General Chemistry, 4 terms (24 months) Printed Access Card
- Complete each of these reactions by filling in the blanks. Predict whether each reaction is product-favored or reactant-favored, and explain your reasoning. (a) _________ (aq) + Br(aq) NH3(aq) + HBr(aq) (b) CH3COOH(aq) + CN(aq) ________ (aq) + HCN(aq) (c) ________ (aq)+H2O () NH3(aq) + OH(aq)arrow_forwardHydrogen, H2S, and sodium acetate, NaCH3CO2 are mixed in water. Using Table 16.2, write a balanced equation for the acid-base reaction that could in principle, occur. Does the equilibrium lie toward the products or the reactants?arrow_forwardWrite chemical equations showing the individual proton-transfer steps that occur in aqueous solution for each of the following acids. a. H2C2O4 (oxalic acid) b. H2C4H4O6 (tartaric acid)arrow_forward
- CH3CH2COOH Draw the Lewis structure of the acid and mark the acidic hydrogen with an asterisk (*). Draw a Lewis structure of the conjugate base of the acid. Suppose the acid is neutralized with a strong base. a) Which of the two structures you drew in 6 and 7 would be the predominant form of the species at a pH well above that at the equivalence point? b) Which of the two structures would be the predominant form of the species at a very low pH, well below that at the equivalence point and similar to the pH near the start of the titration? c) At what point in the titration, if any, would there be equal amounts of the two forms?arrow_forwardpH = −log[H+] where [H+] is the hydrogen ion concentration, measured in moles per liter. Solutions with a pH-value of less than 7 are acidic; solutions with a pH-value of greater than 7 are basic; solutions with a pH-value of 7 (such as pure water) are neutral. Black coffee has a pH of 5 and pure water has a pH of 7. Compare the pH of each and determine how much more acidic black coffee is than pure water.arrow_forwardIf the Kb for hydrazine, N2H4(aq), is 1.7 x 10-6 , calculate the pH of a 1.8 mol/L solution of hydrazine.arrow_forward
- Define pH in words. The strong acid HClaq has a pH value of 1, use the following equation for a strong acid: HClaq à H+aq + Cl-aq and convert the following expression to deduce the hydrogen ion concentration: pH = -log10 [H+] (ii) Use the above expression to deduce the pH of HCl (aq) given the concentration of the acid to be 4.5 mol/dm3arrow_forwardThe pH Scale [H;O"] pH pOH [OH'] Step 1 Calculate the solution's pH using the equation: pH = -log[H;0*] Step 2 Determine the value of pOH using the equality: pH + pOH = pKw; at 25 °C, pKw = 14.00, so pH + pOH = 14.00 Step 3 Calculate [OH] using the equation: pOH = -log[OH] At 25 °C, a solution has a hydronium ion concentration of 3.20×10-8 M. What is the pH, pOH, and [OH] of this solution? pH = | pOH %3D [OH']=| M Submitarrow_forwardConsider 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 -5arrow_forward
- Predict the position of equilibrium and calculate the equilibrium constant, Keq, for acid-base reactionarrow_forwardConsider 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 DELLarrow_forward[References] Use the References to access important values if needed for this question. 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 7.68 × 10-³ mol/L, the pH is b. If the pH of a solution is 3.140, the hydrogen ion concentration is mol/L. Submit Answer Retry Entire Group 4 more group attempts remaining Previous Next Save and Exit Cengage Learning | Cengage Technical Supportarrow_forward
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