Question

13. Rachel wants to calculate the nH. What is the pH of 0.1 M HCl aqueous solution? b. 2 c. 4 d. 7 e. 11 Answer: 14. Ekpe learns water has special properties. Which of the following is NOT correct for water a. It forms hydrogen bonding. b. It is non-polar. c. It has dipole-dipole interactions. d. It has a high surface tension. e. The density of water is highest at 4 °C. Answer: 15. Obinna finds that the physiological saline is 0.90 % w/v NaCl solution. In which of the following solutions, will the rate of water entering the cell be greater than the rate of water leaving the cell? a. 0.20% w/v NaCl solution b. 0.90% w/v NaCl solution c. 1.0% w/v NaCl solution d. 2.0% w/v NaCl solution Answer: 16. Mary leams the molarity. How many moles of glucose are in 500 mL of 1.0 M glucose solution? a. 2.0 mol b. 1.0 mol c. 0.50 mol d. 500 mol Answer: 17. Brenda learns hydrogen bonding is one of the secondary forces. Which of the following does NOT form hydrogen bonding? a. NH b. HF c. CHF d. CH:OH Answer:

Answer 1

13. G We are given with 0.1MHO p.e. ht=0.1M= 10lm pH of acid = -log [ht] = -log(10) photo 1 м н А1о | Hence option @ is correct 14. b.) It is non-polar. is correcs water in polar molecule hence option 15) more is the concentration more will be the rate of w ater entering the cell. Hence option 9 2.0% w/n Noel solution is correct 16) we are given melarity of glucose = 1M Volume of gle cose = 5oome = 0.52 Since molarity of glucose = no. of moles of glucose volume of solution in litre 1= no of males of glucos 0.5 Hence no of moles of glucose = 0.5 Option ② is correct 17) NH, NF, CIROH Can form H bonding becaus more electronegative atorms (N,F,ol are drectly attached to hydrogen. But in Chata , hy drogen is not directly attached to F. Hence No Hydrogen bonding is there hn Hence option is correct. O 0 0