Concept explainers
Interpretation:
From the given set of chromium hydroxide compounds the amphoteric compound has to be identified. The balanced net ionic equation for the reaction of amphoteric compound with hydroxide ion then the oxidation state and color of the product should be determined.
Concept Introduction:
Lewis acid: The chemical species which accepts pair of electrons are termed as Lewis acid.
Lewis base: The chemical species which donates pair of electrons are termed as Lewis base.
Acid: The substances that donate
Base: The substances that accept
Amphoteric: They are compounds or ions that react with both acid and base. Example for amphoteric is
Ionic equation is an equation in which ions are explicitly shown.
Spectator ions are the ion that appears unchanged on both sides of a reaction arrow.
Net ionic equation is the chemical equation for a reaction which lists only those species participating in the reaction.
To write the net ionic equation, steps mentioned below must be followed.
- 1. Write the balanced molecular equation
- 2. Write the ionic equation showing the strong electrolytes completely dissociated into cations and anions.
- 3. Cancel the spectator ions on both sides of the ionic equation.
- 4. Check that charges and number of atoms are balanced in the net ionic equation.
Want to see the full answer?
Check out a sample textbook solutionChapter 20 Solutions
General Chemistry: Atoms First
- Basic solutions of Na4XeO6, are powerful oxidants. What mass of Mn(NO3)26H2O reacts with 125.0 mL of a 0.1717 M basic solution of Na4XeO6 that contains an excess of sodium hydroxide if the products include Xe and solution of sodium permanganate?arrow_forwardCopper(I) disproportionates to copper metal and copper(II) ion. 2 Cu+(aq) --> Cu(s) + Cu2+(aq) (a) What two half-reactions make up the disproportionation reaction? (b) Is this disproportionation product favored? (c) What is the equilibrium constant for this reaction?arrow_forwardWhat is the oxidation state of Cl in Ca(ClO)2arrow_forward
- What is the oxidation state of chlorine in the compound KClO3? (A) -1 (B) +1 (C) +3 (D) +5arrow_forwardK2Cr207 + 7H2C204 · 2H2O 2K[Cr(C204)2(H2O)2] · 2H2O + 6CO2 + 13H2O Is this is redox reaction? if so, what element is being oxidized? what is initial and final oxidation state?arrow_forward(a) Draw a Lewis dot and cross structure (including any lone pairs) for a NBr3 molecule and determine the shape of the molecule and number of valence electrons. (b) Six ammonia ligands form a complex ion with Co²+. What is the overall charge of the complex ion? Write the formula for the complex ion. What is the coordination number of the complex ion? Explain how ammonia ligands form a complex ion with Co²+? What is the geometry of the complex ion? Would you expect the complex to be coloured? Explain why? i. ii. iii. iv. V. vi.arrow_forward
- How many electrons are in the valence d orbitals in these transition-metal ions? (a) Cu+arrow_forwardTaking into account the Jahn-Teller effect, predict the structure of [Cr(OH2)6]^2+arrow_forward(a) Why do transition elements show variable oxidation states? (i) Name the element showing maximum number of oxidation states among the first series of transition metals from Sc (Z = 21) to Zn (Z = 30). (ii) Name the element which shows only +3 oxidation state. (b) What is lanthanoid contraction? Name an important alloy which contains some of the lanthanoid metals.arrow_forward
- Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningChemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStax