31) For which of the following is pOH-12.002 A. 0.010 M HCI B. 2.0 MHCI C. 0.010

Question

31) For which of the following is pOH-12.002 A. 0.010 M HCI B. 2.0 MHCI C. 0.010 M NaOH D. 2.0 MNaOH 32) The activation energy of a reaction: A. increases with temperature. B. increases with concentration. C. increases with pressure. D. none of the above. 33) When solid NH,NO, is dissolved in water at 25.0 C, the temperature of the solution decreases What is true about the signs of AH and AS for this process? A. AH is negative, AS is positive B. is negative, As is negative C. AH is positive, AS is positive D. AH is positive, AS is negative 34) If 25.00 mL of 0.100 M NaOH is added to 25.00 mL of 0.100 M HC,H,O2, what is the pH? A. 4.52 B. 5.88 C. 7.00 D. 8.88 35) The Nernst equation: A. is used to determine the pH of a buffer solution. B. is used to determine the activation energy C. is used to determine equilibrium constants. D. is used to determine battery voltages

Explanation / Answer

31)
A) pH = -log[H+]
= -log[0.010]
= 2
pOH = 14-pH
= 14-2
= 12

Answer : option A
32)
activatin energy is indenpendent of temperature and pressure
it can reduce by catalyst
Answer : option D
35)
Nernst equation
E = E0 - (TR/nF)*ln([product]/[reactant])
here, E is battery voltage

Nernst equation is used to calculate battery voltage
Answer : option D

i am allowed to do only one question at a time

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