N the following reaction: Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) A. H2 is the reducing agent and is oxidized B. HCl is reduced and is the oxidizing agent C. MgCl2 is the oxidizing agent and is reduced D. Mg is reduced and is the oxidizing agent. E. HCl is oxidized and is the reducing agent Reset Selection
Solved
Show answers
More tips
- F Food and Cooking 10 Ideas for a Wedding Anniversary Gift...
- H Health and Medicine Hangover: How to Get Rid of It Quickly?...
- S Style and Beauty How to Choose the Right Fur Coat and Avoid Regrets?...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Ответ:
HCl is reduced and is the oxidizing agent
Explanation:
Looking at the reaction shown in the question
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)
HCl is reduced to H2. The oxidation number of hydrogen decreased from +1 to zero. While magnesium was oxidized. Its oxidation number increased from zero to +2.
Hence we can rightly say that HCl was the oxidizing agent since the oxidizing agent is reduced in a reaction and the reducing agent is oxidized in a reaction.
Ответ:
= 3.064 g/L
Explanation;Using the equation;
PV = nRT , where P is the pressure,. V is the volume, n is the number of moles and T is the temperature and R is the gas constant, 0.08206 L. atm. mol−1.
Number of moles is 1 since one mole has a mass equivalent to the molar mass.
Therefore; We can find the volume and thus get the density.
V = nRT/P
= (1 × 0.08206 × 498 )/ 0.939
= 43.52 L
But; density = mass/volume
Therefore;
Density = 133.34 / 43.52
= 3.064 g/L