Question

Which of the following is so oxidation-reduction reaction? A) Cu (s) + 2AgNO_3(aq) rightarrow 2Ag (s) + Cu(NO_3)_2 (aq) B) HCl(aq) + NaOH(aq) rightarrow H_2O (l) + NaCl(aq) C) AgNO_3(aq) + HCl (aq) rightarrow AgCl (s) + N\HNO_3(aq) E) H_2CO_3(aQ) + Ca(NO_3)_2 (aq) rightarrow 2HNO_3(aq) + CaCO_3(s) How many moles of K^+ are present in 343 mL of a 1.27 M solution of K_3PO_4? A) 0.436 B) 1.31 C) 0.145 D) 3.70 E) 11.1 What is the concentration (M) of a KCI solution prepared by dissolving 11.7 g of KCl in sufficient water to give 350 mL of solution? A) 18 B) 0.16 C) 0.45 D) 27 E) 0.39 What volume (mL) of a concentrated solution of sodium hydroxide (6.00 M) must be diluted to 200, mL to make a 1.50 M solution of sodium hydroxide? A) 0.0500 B) 1.12 C) 25.8 D) 62.4 E) 39.3 In a titration of 35.00 ml. of 0.737 M H_2SO_4, is required for neutralization. A) 35.0 B) 1.12 C) 25.8 D) 62.4 E) 39.3 Which one of the following conditions would always result in an increase in the internal energy of a system? A) The system loses heat and docs work on the surroundings. B) The system gains heat and has work done on it by the surroundings C) The system loses heat and has work done on it by the surroundings. D) The system gains heat and docs work on the surroundings E) None of the above is correct. Which one of the following statements is true? A) Enthalpy is an intensive property. B) The enthalpy change for a reaction is independent of the state of the reactants and products C) Enthalpy is a state function. D) H is the value of q measured under conditions of constant volume. E) The enthalpy change of a reaction is the reciprocal of the AH of the reverse reaction.

Answer 1

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