What should be the ph of a solution of 1.0 ml of 0.1 m acetic acid and 1.0 ml of 0.1 m sodium acetate and 48.0 ml h2o? justify your answer. c. what should be the ph of a solution of 7.5 ml of 0.1m acetic acid and 7.5 ml of o.1 m sodium acetate and 35.0 ml h2o?
Solved
Show answers
More tips
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- H Health and Medicine How to Cure Adenoids?...
- H Health and Medicine Why Wearing a Back Brace Can Be Beneficial During Back Strain?...
- S Sport When and Where Will the 2014 World Cup be Held?...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
Answers on questions: Chemistry
- C Chemistry How many miles of carbon dioxide gas occupy a volume of 81.3 at 204 kPa and a temperature of 95.0 C...
- C Chemistry 17. Which of the following lists contains only elements and a reason why they are elements C12, H2, Na, He - Substances are elements because they are pure. H,O, NaCl, N2, CO2-Substances...
- C Chemistry What is the definition of a catalyst? Group of answer choices 1. A substance that speeds up a reaction while being consumed in the process 2. A product in a chemical reaction 3. A...
- C Chemistry Rank from most to least number of valence electrons. to rank items as equivalent, overlap them. arrange the elements in decreasing order of the number of valence electrons. kr ca ba...
- C Chemistry In a unimolecular reaction with three times as much starting material as product at equilibrium, what is the value of keq? is δg o positive or negative? enter keq as a decimal. be...
- C Chemistry 1. A gas has a volume of 5.30 mL and a mass of 24.10 grams. What is the density?...
- C Chemistry Synthesis: quarantine ideas of cartoons...
- C Chemistry A fireman feels the heat from a fire before he even gets up to it. This is caused by ___. a conduction b convection c radiation...
- C Chemistry What is the hybridization state on the central N atom in the azide ion, N3−?...
- C Chemistry Astronomers observed that the orbit of Uranus was not uniform. Therefore, they hypothesized the existence of another planet. This is an example of scientific investigation being led...
Ответ:
10.1% En Masa
Explanation:
El porcentaje de masa en una solución química es una unidad de concentración definida como cien veces la relación entre la masa del soluto y la masa de la solución (Soluto + solvente).
% masa = Masa soluto / Masa solución (Soluto + solvente) ×100
En el problema, se puede identificar el soluto porque es la sustancia que se disuelve, esta es el cloruro de potasio.
Mientras que la sustancia en la que se disuelve el soluto, es el solvente, agua.
Así, la masa de soluto es:
Masa soluto: Masa cloruro de potasio: 7.14g
Y la masa de la solución: Masa Cloruro de potasio + Masa agua =
7.14g + 63.8g = 70.94g
Así, el porcentaje en masa de la solución es:
%Masa = 7.14g / 70.94g×100 =
10.1% En Masa