Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN: 9781938168390
Author: Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher: OpenStax
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Textbook Question
Chapter 15, Problem 42E
Iron concentrations greater than
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What is the equilibrium expression for the following reaction?
Zn(s) + 2NAOH(aq) + 2H2O(e) = NazZn(OH)4(aq) + H2(g)
5. Hydrogen cyanide has the chemical formula HCN. The compound
occurs as a colourless gas or a pale blue liquid. Its solution in water is
called hydrocyanic acid. It reacts with water as per the reaction
below. What is the pH of 0.176 mol/L solution of the above acid (K =
4.98 x 10')?
-9
a
HCN(aq) + H₂O(l) ↔ CN¯(aq) + H₂O*(aq)
(answer + units)
give the direction of the reaction if K>> 1.
Chapter 15 Solutions
Chemistry by OpenStax (2015-05-04)
Ch. 15 - Complete the changes in concentrations for each of...Ch. 15 - Complete the changes in concentrations for each of...Ch. 15 - How do the concentrations of Ag+ and CrO42- in a...Ch. 15 - How do the concentrations of Pb2+ and S2- change...Ch. 15 - What additional information do we need to answer...Ch. 15 - Which of the following slightly soluble compounds...Ch. 15 - Which of the following slightly soluble compounds...Ch. 15 - Write the ionic equation for dissolution and the...Ch. 15 - Write the ionic equation for the dissolution and...Ch. 15 - The Handbook of Chemistry and Physics...
Ch. 15 - The Handbook of Chemistry and Physics...Ch. 15 - Use solubility products and predict which of the...Ch. 15 - Assuming that no equilibria other than dissolution...Ch. 15 - Assuming that no equilibria other than dissolution...Ch. 15 - Assuming that no equilibria other than dissolution...Ch. 15 - Assuming that no equilibria other than dissolution...Ch. 15 - Assuming that no equilibria other than dissolution...Ch. 15 - Explain why the changes in concentrations of the...Ch. 15 - Explain why the Changes in concentrations of the...Ch. 15 - Calculate the solubility of aluminum hydroxide,...Ch. 15 - Refer to Appendix J for solubility products for...Ch. 15 - Most barium compounds are very poisonous; however,...Ch. 15 - Public Health Service standards for drinking water...Ch. 15 - Perform the following calculations: (a) Calculate...Ch. 15 - The solubility product of CaSO42H2O is 2.4105....Ch. 15 - Assuming that no equilibria other than dissolution...Ch. 15 - Assuming that no equilibria other than dissolution...Ch. 15 - The following concentrations are found in mixtures...Ch. 15 - The following concentrations are found in mixtures...Ch. 15 - Which of the following compounds precipitates from...Ch. 15 - Which of the following compounds precipitates from...Ch. 15 - Calculate the concentration of Tl+ when TICl just...Ch. 15 - Calculate the concentration of sulfate ion when...Ch. 15 - Calculate the concentration of Sr2+ when SrF2...Ch. 15 - Calculate the concentration of PO43- when Ag3PO4...Ch. 15 - Calculate the concentration of F- required to...Ch. 15 - Calculate the concentration] of Ag+ required to...Ch. 15 - What [Ag+] is required to reduce [CO32-] to...Ch. 15 - What [F-] is required to reduce [Ca2+] to 1.0104M...Ch. 15 - A volume of 0.800 L of a 2104 -M Ba(NO3)2 solution...Ch. 15 - Perform these calculations for nickel(II)...Ch. 15 - Iron concentrations greater than 5.4106 M in water...Ch. 15 - A solution is 0.010 M in both Cu2+ and Cd2+. What...Ch. 15 - A solution is 0.15 M in both Pb2+ and Ag+. If Cl-...Ch. 15 - What reagent might be used to separate the ions in...Ch. 15 - A solution contains 1.0105 mol of KBr and 0.10 mol...Ch. 15 - A solution contains 1.0102 mol of Kl and 0.10 mol...Ch. 15 - The calcium ions in human blood serum are...Ch. 15 - About 50% of urinary calculi (kidney stones)...Ch. 15 - The pH of normal urine is 6.30, and the total...Ch. 15 - Magnesium metal (a component of alloys used in...Ch. 15 - Hydrogen sulfide is bubbled into a solution that...Ch. 15 - Perform the following calculations involving...Ch. 15 - Calculate the molar solubility of AgBr in 0.035 M...Ch. 15 - How many grams of Pb(OH)2 will dissolve in 500 mL...Ch. 15 - Use the simulation...Ch. 15 - How many grams of Milk of Magnesia, Mg(OH)2 (s)...Ch. 15 - Two hypothetical salts, LM2 and LQ, have the same...Ch. 15 - Which of the following carbonates will form first?...Ch. 15 - How many grams of Zn(CN)2(s) (117.44 g/mol) would...Ch. 15 - Under what circumstances, if any, does a sample of...Ch. 15 - Explain why the addition of NH3 or HNO3 to a...Ch. 15 - Calculate the cadmium ion concentration, [Cd2+],...Ch. 15 - Explain why addition of NH3 or HNO3 to a saturated...Ch. 15 - Sometimes equilibria fur complex ions are...Ch. 15 - Using the value of the formation constant for the...Ch. 15 - Using the dissociation constant, Kd=7.81018,...Ch. 15 - Using the dissociation constant, Kd=3.41015,...Ch. 15 - Using the dissociation constant, Kd=2.21034,...Ch. 15 - Using the dissociation constant kd=1*10-44...Ch. 15 - Calculate the mass of potassium cyanide ion that...Ch. 15 - Calculate the minimum concentration of ammonia...Ch. 15 - A roll of 35-mm black and white photographic film...Ch. 15 - We have seen an introductory definition of an...Ch. 15 - Write the Lewis structures of the reactants and...Ch. 15 - Write the Lewis structures of the reactants and...Ch. 15 - Using Lewis structures, write balanced equations...Ch. 15 - Calculate [HgCl42-] in a solution prepared by...Ch. 15 - In a titration of cyanide ion, 28.72 mL of 0.0100...Ch. 15 - What are the concentrations of Ag+, CN-, and...Ch. 15 - In dilute aqueous solution HF acts as a weak acid....Ch. 15 - The simplest amino acid is glycine, H2NCH2CO2H....Ch. 15 - Boric acid, H3303, is not a Bronsted-Lowry acid...Ch. 15 - A saturated solution of a slightly soluble...Ch. 15 - Calculate the equilibrium concentration of Ni2+ in...Ch. 15 - Calculate the equilibrium concentration of Zn2+ in...Ch. 15 - Calculate the equilibrium concentration of Cu2+ in...Ch. 15 - Calculate the equilibrium concentration of Zn2+ in...Ch. 15 - Calculate the Fe3+ equilibrium concentration when...Ch. 15 - Calculate the CO2+ equilibrium concentration when...Ch. 15 - The equilibrium constant for the reaction...Ch. 15 - Calculate the molar solubility of Sn(OH)2 in a...Ch. 15 - Calculate the molar solubility of Al(OH)3 in a...Ch. 15 - What is the molar solubility of CaF2 in a 0.100-M...Ch. 15 - What is the molar solubility of BaSO4 in a 0.250-M...Ch. 15 - What is the molar solubility of Tl(OH)3 in a...Ch. 15 - What is the molar solubility of Pb(OH)2 in a...Ch. 15 - A solution of 0.075 M CoBr2 is saturated with...Ch. 15 - A 0.125-M solution of 0.075 Mn(NO3)2 is saturated...Ch. 15 - Calculate the molar solubility of BaF2 in a buffer...Ch. 15 - Calculate the molar solubility of CdCO3 in a...Ch. 15 - To a 0.10-M solution of Pb(NO3)2 is added enough...Ch. 15 - Calculate the concentration of Cd2+ resulting from...Ch. 15 - Both AgCl and Agl dissolve in NH3.. (a) What mass...Ch. 15 - Calculate the volume of 1.50 M CH3CO2H required to...Ch. 15 - Even though Ca(OH)2 is an inexpensive base, its...Ch. 15 - What mass of NaCN must be added to 1 L of 0.010 M...Ch. 15 - Magnesium hydroxide and magnesium citrate function...Ch. 15 - The following question is taken from a Chemistry...Ch. 15 - Which of the following compounds, when dissolved...Ch. 15 - Which of the following compounds, when dissolved...Ch. 15 - What is the effect on the amount of solid Mg(OH)2...Ch. 15 - What is the effect on the amount of CaHPO4 that...Ch. 15 - Identify all chemical species present in an...Ch. 15 - A volume of 50 mL of 1.8 M NH3 is mixed with an...
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