Aqueous h - Study guides, Class notes & Summaries

Practicals Chemistry AQA A-level Rated A+ Required Practical 1 - titration and making a standard solution Making a standard solution 1. weigh the required mass of solid using a sample bottle on a 2 dp balance. 2. transfer the solid into a beaker using distilled water to wash it out- preventing any solid remaining in the sample bottle. 3. reweigh the sample bottle and work out the difference. 4. Add 100cm3 of distilled water to the beaker to dissolve the solid (small volume of water) using a...

What is an acid? - Answer-solution has an excess of H+ ions What is a base? - Answer-solution has an excess of hydroxyl ions (OH-) What is neutralization? - Answer--process where acid and base are mixed until they become neutral and the PH is 7. What are the two products of a neutralization chemical reaction? - Answer-water and salt ( The type of salt depends on acid or base added to neutralize.) What is a weak acid? - Answer-an acid that only partially ionizes in an aqueous solution. This...

Hydrophobic interactions make important energetic contributions to : a. binding of a hormone to its receptor protein b. enzyme-substrate interactions c. membrane structure d. three-dimensional folding of a polypeptide chain e. all of the above are true f. None of them correct answers E Which of the following is true about the properties of aqueous solutions? a. A pH change from 5.0 to 6.0 reflects an increase in the hydroxide ion concentration ([OH-]) of 20% b. A pH change from 6.0 to...

General Chemistry II Final Exam (ACS) UVU 273 Questions with Verified Answers If the pressure of a gas is increased at constant temperature, the volume ___. - CORRECT ANSWER Decreases If the pressure of a gas is decreased at constant temperature, the volume ___. - CORRECT ANSWER Increases If the volume of a gas is decreased at constant pressure, the temperature ___. - CORRECT ANSWER Decreases P ? T ? V ? - CORRECT ANSWER Pressure does the opposite of volume. Which of the following...

AP Biology Unit 1 Test 100% solved water -polar molecule -polar colvalent bonds -oxygen end is partial negative and the hydrogens have a partially positive end -cohesive polar covalent bonds -opposite ends of the molecule have opposite charges cohesion -H bonding between H2O creates it (sticky) -allows for the movement of water against gravity -high surface tension -water moves up a tree by transpiration (helped by ____) adhesion -H2O molecules form H bonds with other s...

accuracy - how close a measurement is to a true or accepted value acid - proton donor Acid Naming Rules - 1. Add O, add "per" prefix. 2. Subtract 1 O, ending in "ous". 3. Subtract 2 O's, add "hypo" prefix with "ous" suffix. acid-base titration - a solution of a known concentration (standard) is added gradually to another in order to determine the concentration actual yield - the amount of actual product formed in a reaction Ag⁺ - Silver cation Al³⁺ - Aluminum cation allot...

Valency correct answers How many electrons the atom need to fill shell - Shell 1: 2e- - Shell 2: 8e- - Shell 3: 18e- Covalent bonds correct answers - Sharing of electrons between atoms of the same or different element Compound correct answers - combo of 2+ different elements Electronegativity correct answers - Atoms attraction for e- in covalent bond (EX: H2O) - Determines the distribution of e- w/in a covalent bond - higher value = stronger attraction of electrons EX: O = 3.5...

water CORRECT ANSWER -polar molecule -polar colvalent bonds -oxygen end is partial negative and the hydrogens have a partially positive end -cohesive polar covalent bonds CORRECT ANSWER -opposite ends of the molecule have opposite charges cohesion CORRECT ANSWER -H bonding between H2O creates it (sticky) -allows for the movement of water against gravity -high surface tension -water moves up a tree by transpiration (helped by ____) adhesion CORRECT ANSWER -H2O molecules form H bond...

Test Bank for Introduction to General, Organic and Biochemistry 12e 12th Edition by Frederick A. Bettelheim; William H. Brown; Mary K. Campbell; Shawn O. Farrell; Omar Torres. ISBN-13: 1594 Full Chapters test bank Chapter 1: Matter, Energy, and Measurement 1.1 Chemistry and the Study of Matter 1.2 The Scientific Method 1.3 Reporting Numbers in Science 1.4 Making Measurements 1.5 Unit Conversions 1.6 States of Matter 1.7 Density and Specific Gravity 1.8 Describing the Various For...

WGU Biochemistry OA (Latest 2022/2023) Verified Answers Bohr Effect chart (low pH) C- High CO2 H- High H+ A- Acidic R-Release of O2(rt. Shift) T- tense state (in tissues) Primary structure Sequence of amino acids that make up a protein Secondary Structure Sequence of amino acids fold. Tertiary Structure -more folding in a 3D shape. -R groups (side chains) Quaternary Structure Protein has more than 1 polypeptide chain. Chemical reaction -absorb and release en...