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What has a complete ionic equation of Mg s plus Zn2 plus plus 2NO3- Mg2 plus plus 2NO3- plus Zn s?
NO3-
The reaction mgf2 mg2 plus aq plus 2f-aq has reached saturation with concentrations mg2 plus equals 2.8 x 10-5 and f- equals 1.5 x 10-2 what is the value of ksp for mgf2 at this temperature?
6.4 x 10-9
What is the oxidation half-reaction for Mg s plus ZnCl2 aq --- MgCl2 aq plus Zn s?
MgCl2 aq plus Zn s is the oxidation half-reaction for Mg s plus ZnCl2 aq.
What is the oxidation half reaction of mgs plus zncl2aq mgcl2aq plus zns?
It is the zinc that gets reduced, and the magnesium that gets oxidised. This is because zinc has the higher reduction potential of -0,76 V, compared to magnesiums -2,37 V. The oxidation half cell therefore becomes Mg (s) --> Mg2++ 2e-
What is the standard cell notation for a galvanic cell with aluminum and gold?
Type your answer here... Al(s) | Al3+(aq) Mg2+ (aq) | Mg(s)
Ca2 plus ions separate from Mg2 plus ions?
they cannot bond together, they are separate .
Is ca plus 2 or mg plus 2 larger?
The Ca2+ ion is larger than the Mg2+ ion. The ionic radii are: 86pm for the Mg2+ and 114pm for the Ca2+. Besides the fact that the Ca2+ has more electrons this can be explained by the principle of electron shielding. Electron shielding is when lower level electrons block the EFC(effective nuclear charge) from effecting the valence electrons of an ion. Ca2+has more electrons than Mg2+ so more electron shielding occurs.
What is the element that binds to troponin?
Ca2+ , Mg2+ .
Why do you carry out edta titration at ph 10?
Many metal ions (eg. Ca and Mg) only react completely when EDTA is in pure anionic form (EDTA)4- anion. Since it is a quadruple acid this can only be realized at pH value above 10 for Ca2+ ions, for Mg2+ even higher: >12
Which ion has the smallest ionic radius Mg2 plus or Ca2 plus?
Mg is in period 3. Ca is in period 4. Down a group the size increases. So Mg is smaller than Ca.
What is the average hardness of a bottle of water?
Total hardness=(Ca2+)*(combining weight of CaCO3/combining weight of Ca2+) +(Mg2+)(combining weight of CaCO3/combining weight of Mg2+)
How does borax serves as water softening agent?
When Borax is added to water, it reacts with Ca2+ and Mg2+, which come out of water as precipitates. The reactions involved are: Ca2+ + Na2B4O7 ----> CaB4O7 + 2Na+ Mg2+ + Na2B4O7 -----> MgB4O7 + 2Na+
How does borax serve as a water softening agent?
When Borax is added to water, it reacts with Ca2+ and Mg2+, which come out of water as precipitates. The reactions involved are: Ca2+ + Na2B4O7 ----> CaB4O7 + 2Na+ Mg2+ + Na2B4O7 -----> MgB4O7 + 2Na+
What are cations?
Cations are positively charged ions. •Na+ •K+ •Ca2+ •Mg2+
What two elments have ions with a 2 charge?
Mg2+ and Ca2+ (and many more!)
What is the chemical symbol of hard water?
CaCO3 calcium carbonate
What are the major elements found in water?
•Na+, K+, Mg2+, Ca2+, SO42-, Cl-, NO3-, HCO3-
