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Question 9 Which one of these salts will form a neutral solution on dissolving in water?...
Question 9 Which one of these salts will form a neutral solution on dissolving in water? a. NH4NO3 O b. KNO2 O c. NaCl04 d. NaCN e. FeCl3
Which one of the following salts will form an acidic solution on dissolving in water? NH4I NaF KOH LiBr NaCN
Which one of these salts will form a basic solution on dissolving in water? Select one: a. MgCla b. KCN c. NaNO3 X d. NHANO3 e. Fe(NO3)3
QUESTION 31 A solution was made by dissolving 26.5g of Na2CO3 in 500.0 mL of water. What is the molality of this solution? (1.0g of water -1.0 ml of water) 11 Na23.6C128016 OA 0.25 m OB. 0.25 M OC 0.5M OD 0.5 m E. None of above QUESTION 32 Molarity (M) of a solution varies with O A Pressure O Temperature OC Partial pressure D. Both A and B OE. Both A and C QUESTION 33 Which of the following...
help please asap please Question 12 (1 point) Which diagram best describes an aqueous son of copper chord Water molecules are omitted for clarity O- FA 09 o Figure Figure D 8098 0.000 Figure E Question 11 (1 point) Which atom is the largest? O carbon O phosphorus silicon nitrogen Question 10 (1 point) For the process O2(g) → 20(g), AH° = 498 kJ.mol-1. What would be the predicted sign of AS rxn and the conditions under which this reaction...
QUESTION 4 5 points Save Answer Which of the following best describes this dissociation reaction? (Hint: Remember that AG = AH - TAS, how does the entropy term change at different temperatures?) NH subscript 4 N O subscript 3 left parenthesis s right parenthesis rightwards arrow N H subscript 4 to the power of plus left parenthesis a q right parenthesis plus N O subscript 3 to the power of minus left parenthesis a q right parenthesis capital delta H...
Typical Math Problems 1) What is the pH of a buffer solution which is 0.12M in benzoic acid, pKa 4.19, and is 0.11M in sodium benzoate? 2) Find the %-diss of a buffer if the pKa 7.10 and the pH of the buffer is 7.50. 3) A weak monoprotic acid has a pKa 6.15. 50.00 mL of an 0.1250M aqueous solution of this weak acid is titrated with 0.1000M Na0H. a) What is the equivalence point volume and ½ equivalence...
QUESTION 19 10 p Which one of the following is not a soluble compound in water? O KOH O CaSO4 Li3PO4 O Mg(NO312 QUESTION 20 Which one of the following chemical equations is a balanced equation? CH4(E) + O2(g) - CO2(g) + H2008) HCl(aq) + HE2(NO3)2(aq) - He2Cl2ls1 + HNO3(aq) 2NH4Cl(aq) + Pb(NO3)2(aq) - PbCl215) + NH4NO3(aq) 2C3H6tel + 9 020) - 6CO2(g) + 6H2008) Save hle Sone All Answers to save all answers. QUESTION 17 Consider the reaction: Ba(s)...
QUESTION 5 Consider the formation of solid silver chloride from aqueous silver and chloride ions. Given the following table of thermodynamic data at 298 K: The value of K for the reaction at 25 °C is ________. a) 1.8 × 104 b) 3.7 × 1010 c) 1.9 × 10-10 d) 810 e) 5.3 × 109 QUESTION 6 Consider the reaction: NH 3 (g) + HCl (g) → NH 4Cl (s) Given the following table of thermodynamic data, ...
2- Therro dynamics e that best completes the statement or answers the question TIPLE CHOICE. Choose the one alternative that best completes the at 1) The SI unit for pressure is the A) newton. B) pascal C) MM Hg D) atmosphere. 2) The mixing of different gases by random molecular motion with freque A) diffusion. B) Dalton's law. C) compressibility. D) effusion 3) Entropy is a measure of A) the rate of a reaction. C) molecular randomness. B) free energy...