
Question 3 1 pts A substance that produces H+ ions when dissolved in water is a/an...
d. 1.33 QUESTION 10 Arrhenius defined a base as a. A substance that produces OH-ions when dissolved in water A hydrogen ion acceptor b. C. A substance that produces H+ ions when dissolved in water An electron donor QUESTION 11
aaquairon(III) ions, Fe(H,0) 3+, form. Fe(H,0)+ ions 4. When Fe(NO3)3 is dissolved in water, hexaaquairon(III) ions, Fe(H20) hydrolyze in aqueous solution according to the equation given below Fe(H,0) + + H,0 = [Fe(HO) (OH)]2+ + H20+ Explain how the addition of 0.050 M nitric acid to the solution prevents hydrolysis Fe(H,0) 3+ ions.
3. When 5.0 g of an unknown substance is dissolved in 150.0 g of water, the freezing point of the solution decreases by 3.5°C. What is the molar mass of the unknown substance if the compound does not dissociate to form ions in solution?
Question 22 2 pts When water ionizes, it produces equal amounts of hydrogen and hydroxide ions, which can reassociate with each other. Water is thus a(n) acid. base. alkali. base and an acid. buffer. Question 23 2 pts definition ofha ?
8) An acid (1.5pts) produces hydroxide ions when dissolved in water. donates protons in a proton transfer reaction. does none of the above. donates electrons in an electron transfer reaction. changes the color of phenolphthalein indicator from colorless to pink. 9) A base (1.5pts) produces hydrogen ions in solution. donates a proton in a proton transfer reaction. causes phenolphthalein indicator to change from colorless to pink. accepts electrons in an electron transfer reaction. does none of the above. 10) Which,...
Which compound produces four ions per formula unit by dissociation when dissolved in water? a. K2C2O4 * b. Al(NO3)3 c. Hg2(NO3)2 d. NaBrO3 e. Na2S2O3 How many ions are produced in solution by dissociation of one formula unit of NiCl26H2O? a. 2 * b. 3 c. 4 d. 6 e. 9
Question 3 4 pts How many significant figures should be in your answer when you convert 0.04070 m to units of nm? Question 4 4 pts Which of the following should exist as separated ions when dissolved in water? OBr2 CCH CH3CH OH • H₂O₂ KNO, auntini
QUESTION 2 Solutes that when dissolved in water totally dissociate into ions and conduct electricity very well are: 1. Strong electrolytes 2. Weak electrolytes 3. Nonelectrolytes
Incorrect Question 4 0/4 pts Which of the following is the Arrhenius definition of an acid? A substance that is an H* donor A substance that produces OH ions in aqueous solution. A substance that is an H* acceptor. A substance that is an OH donor. A substance that produces Htions in aqueous solution. Incorrect Question 5 0/4 pts Which of the following is the Arrhenius definition of a base? A substance that is an H* donor. A substance that...
1. When iron(II) ammonium sulfate is dissolved in water, it dissociates into its component ions. () → () + ( ) + ( ) 2. When oxalic acid is added, the iron (II) ions precipitate as iron(II) oxalate dihydrate. Fe2+ (aq) + (aq) + __H20 (1) ► ( ) + _ H(aq) 3. Next, potassium oxalate is added to the washed precipitate. Potassium oxalate dissociates into its ions in solution. At high oxalate concentrations, iron (II) oxalate combines with another...