1.
4. What property of water is responsible for water transport in plants?
Question 4 options:
|
a. moderation of temperature |
|
|
b. insulation |
|
|
c. its versatility as a solvent |
|
|
d. cohesion |
5.
5. Which of the following explains what is happening when sodium chloride dissolves in water?
Question 5 options:
|
a. Covalent bonds are breaking and re-forming. |
|
|
b. More hydrogen bonds are forming between water molecules. |
|
|
c. Sodium and chloride atoms are separating from one another |
|
|
d. Hydration shells are forming around the sodium and chloride ions |
6.
6. A given solution is found to contain 0.001 mole of hydrogen ion (H+). Which of the following best describes this solution?
Question 6 options:
|
a. acidic: H+ acceptor |
|
|
b. basic: H+ acceptor |
|
|
c. acidic: H+ donor |
|
|
d. basic: H+ donor |
1 d
Water molecules have cohesive forces within themselves which helps them to make a continuous column during water transport.
5 c
When sodium chloride dissolves in water, it breaks into sodium ion and chloride ion respectively.
6. C
The Hydrogen ion concentrations for the given solution is 0.001 M. The pH of this solution will be 3 which is acidic. The acidic solution acts as Hydrogen ion donar.
1. 4. What property of water is responsible for water transport in plants? Question 4 options:...
chapter 16 question 15: 1. The pOH of an aqueous solution of 0.431 M acetylsalicylic acid (aspirin), HC9H7O4, is 2. The hydronium ion concentration of an aqueous solution of 0.43 M nitrous acid is [H3O+] = ____ M question 16: 1. The substance benzoic acid (C6H5COOH) is a weak acid (Ka = 6.3×10-5). What is the pH of a 0.114 M aqueous solution of potassium benzoate, KC6H5COO? 2. What is the pH of a 6.01×10-2 M aqueous solution of sodium...
Polar molecules tend to be soluble in water. a) True b) False Which liquid is miscible with water? a) carbon tetrachloride b) ethyl alcohol c) bromine d) oil Which anion will not precipitate silver ion? a) chloride b) nitrate c) bromide d) carbonate Which pH listed below is most acidic? a) 3 d) 7 c)9 d) 14 A hydrogen ion consists of a(n) a) electron. b) proton. c) neutron. d) proton and electron. Bronsted and Lowry defined an acid as...
-- What is [H3O+] in baking soda water? Question 25 options: 1.0 x 10-14 1.0 x 10-7 2.0 x 10-5 5.0 x 10-10 -- What is [H3O+] for buffered aspirin? Question 23 options: 1.0 x 10-7 8.3 x 10-4 8.3 x 10-3 8.3 x 10-9 -- Is apple juice acidic, basic, or neutral? Question 20 options: acidic basic neutral -- Is tap water acidic basic or neutral? Question 21 options: acidic basic neutral -- Is tea acidic, basic, or neutral?...
Acids and Bases 1) Which of the following is a general property of a basic solution? a. feels slippery b pH less than 7 c. tastes sour d. turns litmus paper red e. none of the above 2) If a vinegar sample has a pH of 5, the solution is which of the following: a. strongly acidic b. weakly acidic c neutral d. weakly basic e. strongly basic 3) Which of the following is a weak Arrhenius acid a. HNO3...
Which of the following molecules could participate in hydrogen bonding? Question 1 options: A) CH4 B) CH3NH2 C) CH2O D) C2H5OH E) HF F) H2O G) CO2 H) HCl I) CH3OCH3 Question 2 (2 points) Question 2 options: For the reaction CH4 + O2 →CO2 + H2OCH4 + O2 →CO2 + H2O what are the coefficients for each reactant or product? a. CH4 b. O2 c. CO2 d. H2O Question 3 (2 points) Question 3 options: For the reaction NaOH + AlCl3...
answer 1-4
Which of the following (a-d) is TRUE regarding solid NaCl dissolving in water The attraction of the water to the ions in NaCl is through dipole-dipole IFs. Water is considered the solute and NaCl the solvent. The partially positive oxygen in water is attracted to the chloride ion. d. The process of separating the sodium ions from the chloride ions is endothermic. All of these statements are true. polar For the following solution, describe the deviation with respect...
A small amount of sodium chloride (NaCl) is dissolved in a large amount of water. Imagine separating this process into the fol sketches show only a portion of the substances, so you can see the density and distribution of atoms and molecules in them.) с NaCl solution HO Use these sketches to answer the questions in the table below. D. The enthalpy of solution AH on is positive when Naci dissolves in water. Use this information to list the stages...
What factor is most important in determining the chemistry of an
organic molecule?
Question 21 options:
the functional groups
the number of carbon-carbon bonds
the number of carbon-hydrogen bonds
the number of branches in the carbon chain
What type of isomers are the following structures?
Question 22 options:
enantiomers
cis-trans isomers
totally different molecules
constitutional isomers
An unknown compound B has been determined to be
either propanal, propanoic acid or propanol. The unknown is fairly
soluble in water and reacts...
1) An Arrhenius acid is defined as a substance which: A) increases [H+] when placed in water C) decreases [H+] when placed in water B) acts as proton acceptor in any system D) acts as proton donor in any system 2) Which of the following is a correct balanced equation for the neutralization reaction that occurs between Al(OH)3 and HCl(aq)? A) Al(OH)3 + HCl(aq) → AICI3 + H20 B) Al(OH)3 + 3 HCI (aq) → AICI3 + H+ + OH-...
Name Experiment 5- Post-lab Questions 1. In Reaction B, you observed magnesium metal reacting with a hydrochloric acid solution to produce hydrogen gas and a magnesium chloride solution. Another reaction that has a gaseous product is the reaction of a hydrochloric acid solution (HCl(ag)) with sodium sulfite (Na,so,(ag)) solution to produce a sodium chloride solution (NaCl(aq)) and gaseous sulfur dioxide (S0,(g)). Write a balanced chemical equation for this reaction. 2. The sulfur dioxide produced by aqueous chemistry in the previous...