ii. [Cr(H2O)6]3+(aq) + 2Cl–(aq) → [Cr(H2O)4Cl2]+(aq) + 2H2O(l)
iii. [Ni(H2O)6]2+(aq) + 4NH3(aq) → [Ni(NH3)4(H2O)2]2+(aq) + 4H2O(l)
b. An iron(III) ion, Fe3+, in aqueous solution has six water molecules bonded to it as ligands.
i. Draw the structure of this ion.
ii. When thiocyanate ions, SCN–, are added to an aqueous solution of iron(III) ions, the solution turns red and one water molecule is replaced by a thiocyanate ion. Use the concept of stability constants to explain why the reaction occurs.
iii. Deduce the formula of the ion forming the red solution.
iv. The stability constant for aqueous Fe3+ ions with SCN– as a ligand is 891 dm3 mol–1. The stability constant for aqueous Fe3+ ions with fluoride ions, F–, as a ligand is 2 × 105 dm3 mol–1. A solution containing fluoride ions is added to the red solution. Would you expect to observe any changes? Explain your answer.
HowOur Website Works
1. FILL IN OUR SIMPLE ORDER FORM
It has never been easier to place your order. Fill in the initial requirements
in the small order form located on the home page and press “continue” button
to proceed to the main order form or press “order” button in the header menu.
Starting from there let our system intuitively guide you through all steps of
ordering process.
2. PROCEED WITH THE PAYMENT
All your payments are processed securely through PayPal. This enables us to
guarantee a 100% security of your funds and process payments swiftly.
3. WRITER ASSIGNMENT
Next, we match up your order details with the most qualified freelance writer
in your field.
4. WRITING PROCESS
Once we have found the most suitable writer for your assignment, they start
working on a masterpiece just for you!
5. DELIVERY
Once finished, your final paper will be available for download through your
personal dashboard. You will also receive an email notification with a copy of
your paper attached to it. Sometimes, the writer may leave a note for you
about the order in case there is any additional information that they need to
give you.