Following question I need help with part b) Please verify my answer for part a) too if possible.

Consider the following reaction for silver tarnishing:
3Ag2S(s) + 2Al(s) -> 6Ag(s) + Al2S3(s)

a. State the oxidation number for each element in the reaction.

3Ag2S(s) + 2Al(s) -> 6Ag(s) + Al2S3(s)
(+1)+(-2)+(+3) -> (+1)+(+3)+(-2)
verify these please

b. Identify the oxidized reactant and the reduced reactant.

Please help me with b) above....

  1. 👍 0
  2. 👎 0
  3. 👁 506
  1. All of the oxidation numbers are right except for Al(s). All elements in the free state have an oxidation number of zero. (Note: I don't consider the reaction written as the reason silver tarnishes. Rather it is a way of removing the sulfide from silver that is tarnished.
    For the part b, oxidation is the loss of electrons. Reduction is the gain of electrons. Which element/ion loses and which gains electrons.

    1. 👍 0
    2. 👎 0
  2. Yes that's right, free states have oxidation number of zero. Ok will work out reduction and oxidation, made it a bit clearer. Thanks for your help, very valuable :)

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    Part A Calculate the standard enthalpy change for the reaction 2A+B --->2C +2D Use the following data: Substance Delta H(kJ/mol) A -263 B -391 C +203 D -523 Express your answer in kilojoules. MY ANSWER FOR PART A: Delta H =277 kJ

    asked by tina on June 16, 2011
  2. Math (Physics)

    Problem: An excited hydrogen atom could, in principle, have a radius of 2.50 mm . ________ Part A: What would be the value of n for a Bohr orbit of this size? Answer--> n= 6.87×103 _______ Part B What would its energy be?

    asked by Dom on April 25, 2017
  3. intro to physics

    an athlete executing a long jump leaves the ground at a 28 degree angle and lands 7.6 m away. part a )what was the takeoff speed ? part b) if this speed were increased by just 8.0% , how much longer would the jump be ? for part a)

    asked by emilia on April 21, 2012
  4. Physics -Interference & Diffraction

    Given Information: Light of wavelength 631 nm passes through a diffraction grating having 485 lines/mm. Part A: What is the total number of bright spots (indicating complete constructive interference) that will occur on a large

    asked by Christina on April 11, 2008
  1. math

    0 of 1 Tosha is trying to find the solution(s) to the system {f(x)=x3−3x2+2g(x)=−x2+x. After analyzing the graph of the functions, Tosha comes up with the following list of ordered pairs as possible solutions: (−1,−2),

    asked by Lost on December 8, 2019
  2. chemistry

    Write a balanced equation for the neutralization of each of the following. Express your answer as a chemical equation. Identify all of the phases in your answer. Part A: H3PO4(aq) and NaOH(aq) Part B: Hl(aq) and LiOH(aq) Part C:

    asked by Lisa on April 1, 2012
  3. physics

    You shoot an arrow into the air. Two seconds later (2.00 s) the arrow has gone straight upward to a height of 30.0 m above its launch point part A:What was the arrow's initial speed?part B:How long did it take for the arrow to

    asked by ana22 on February 11, 2017
  4. physics

    A vector has the components Ax=−37m and Ay=44m. Part A What is the magnitude of this vector? Express your answer to two significant figures and include appropriate units. the answer for part A is help me with b pls 57 m Part B

    asked by sintia on February 13, 2017
  1. Physics

    The intensity of sunlight reaching the earth is 1360 W/m^2 Part A: Assuming all the sunlight is absorbed, what is the radiation-pressure force on the earth? Give your answer in newtons. Part B: Give your answer as a percentage of

    asked by Jill on April 24, 2008
  2. chemistry

    In part B of my question, I was asked calculate the number of atoms in 0.615 mol of 13C (mass number of this Carbon is 13). I received the correct answer of 3.70E23 atoms. However, I do not know how to do Part C of my question,

    asked by Kevin on September 16, 2012
  3. math

    find the next number in the following sequence; 1/2,2/3,3/5,5/8, _ *please i need your assistance guys for this question* My idea is as follows denominator part for the given fraction =1+2 =3 then 2+3 =5, 3+5=8,therefore the next

    asked by kelvin on July 2, 2017
  4. Math-Forecasting Statistics

    The following data is a sample of daily maximum temperatures in New York in March (from 2006-2008). a. Calculate the mean (1 decimal place) and standard deviation (2 decimal places) of this data. You may use technology to answer

    asked by Leora K on July 24, 2018

You can view more similar questions or ask a new question.