50. Mg metal reacts with HCl to produce hydrogen gas: Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g). How many grams of magnesium are needed to prepare 5.00 L of H2 at 735 mm Hg and 18 °C? A) B) C) D) E) 4.91 g 3.67 g 2.90 g 4.32 g 6.49 g

Q: 7. An Arhenius base yields which ion as the only negative ion in n aquecus solution? A hydride ion…

A:

Q: Consider the reaction between hydrogen chloride and calcium carbonate.   a) Write the…

A: The reactants given are hydrogen chloride i.e. HCl and calcium carbonate i.e. CaCO3.

Q: What is reverse acid?  A. Conjugate base  b. Conjugate acid  c. Jugate acid  d. Jugate base

A: In the given question we have to identify the reverse of acid in the following options.

Q: The pH of the following solutions will be equal to or less than 7.0 for all of the following…

A: The pH of the following solutions will be equal to or less than 7.0 for all of the following…

Q: find the OH of the solution.

A: Given :- [H3O+] = 3.2 × 10-5 M  To calculate :- [OH-]  [H3O+]. [OH-]  = 1.0 × 10-14

Q: In a neutralization reaction, the products are   Group of answer choices A. a salt and an acid. B. a…

A: Neutralization reaction  is a reaction in which acid and base reaction in aqueous solutions to form…

Q: How can a pH be calculated if given the concentration of a strong acid?

A: pH: pH is defined as negative logarithm of hydrogen ion concentration.

Q: A compound that dissociates in water to hydroxide ions must be a. Acid b. A salt c. A base d.…

A: Acid is the substance which dissolved in water to produce hydronium ion. Base is the substance which…

Q: Within the pH ranges below, where would you expect to exclusively find an basic solution?   4.0 -…

A: pH is negative logarithm of concentration of H+ions. As we know pH range is 0-14.

Q: What is the conjugate acid of each base?

A: The conjugate acid is produced when the base is acquired the proton while the conjugate base is…

Q: Determine rather each salt is acidic, basic, or neutral. Ammonium fluoride

A: The formula for ammonium fluoride is -

Q: A solution which acts as a buffer is made from: a. A strong acid and the salt of its conjugate…

A: Buffer is a solution which can resist any change in the pH when any small amount of acid/base is…

Q: A solution has a pOH of 13.12. This tells us   a) solution is very acidic b) solution is slightly…

A:

Q: The pOH of a solution is 8.70 1) Is the solution acidic or basic?  2) Calculate the pH and explain…

A:

Q: pick any basic sodium salt and find the pH of a solution that 0.86 M.

A: The question is based on the concept of the pH of the solution.It is defined as a negative logarithm…

Q: Rank the following acids from weakest to strongest: acetic acid, formic acid, lactic acid.

A: Acidity is defined as the ability of a molecule to release protons.  if a compound  easily donate…

Q: Two unknown substances are found in a lab. Data was collected in order to try identify the…

A: It is given that percent ionization of Substance Y is very less than substance X. We need to compare…

Q: Which of the following may be used to measure the pH of a solution?   a. a pH meter   b.…

A:

Q: Variation in the pH of certain lakes occurs sometimes over a 24-hour period. What might control lake…

A: The pH is known as the power of hydrogen in an aqueous solution. Acidic solutions have low pH…

Q: If the initial concentration of ammonia is a weakly basic solution is 0.215 M and the solution is…

A:

Q: Which beaker contain a bas in PH 1 PH 6 PH 7 PH 12 1) 2) 3) 4) O A. Beaker 1 and7 O B. Beaker 2 O C.…

A:

Q: 13. A student has a bottle labeled 0.750% albumin solution. The bottle contains exactly 5.00 mL. How…

A: [13.]  (5 ml)(0.75%) = (x ml)(0.125%) x = 30 ml So one would need to add 25 ml to the original 5…

Q: A solution has a pH of 1. This is considered a highly acidic solution and a solution that has a pH…

A: Introduction The pH scale is generally utilized to determine whether a particularly given solution…

Q: The salt NaCl which 100% dissociates is  a. Basic  b. Neutral  c. Not enough information  d.…

A: We will first dissociate NaCl in water and the decide its nature.

Q: Which solution is the most basic? A. Cleaner B. HCL solution  C. NaOH solution  D. Coffee

A: A solution is said to be basic in nature in which concentration of hydroxide ions is more.

Q: 39. Classify each of the following as a strong acid or a weak acid. H CI b. с. a. d.

A: If a species gives proton by complete dissociation , are called strong acid. Conjugate base of the…

Q: Match the terms to the correct definition. (A choice that describes a property of an acid, but is…

A: Several theories were developed to define the term, acid and base. The theories are Arrhenius…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.