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We are given 50ml of 5L of HCl solutions if it is diluted and made five serial dilutions and then the most diluted sample (50ml) is titrated with 1m of NaOH solution. What volume will be required to neautralize the acidic solution?
Group 8 elements are referred to as noble gasses.
(a) If any, which of the noble gas(es) react with fluorine? Why?
(b) Give a balanced reaction equation of any of the possible reactions in (a).
When iron wool is heated in bromine vapor, iron bromide is produced.
(a) Explain the type of reaction bromine atoms undergo when they are converted to bromide ions.
(b) Write a balanced reaction equation for this reaction
Na and K belong to group 1 in the periodic table of elements.
(a) Explain why, in terms of their electronic configurations, potassium is more reactive than sodium.
(b) Write the balanced equation for the reaction of sodium with water.
A. MgH2
B. SrH2
C. BeF2
D. BaF2
E. Ca(OH)2
F. Mg(OH)2
G. MgF2
H. SrF2
I. 2 Na(s) + H2O(l) → 2 NaOH(aq) + H2(g)
J. 2 K(s) + H2O(l) → 2 KOH(aq) + H2(g)
(a) The least stable hydride between A and B
(b) The least ionic halide between C and D
(c) The most basic hydroxide between E and F
(d) The least water-soluble hydroxide between E and F
(e) The most violent reaction between I and J
(σ1s)2(σ*1s)2(σ2s)2(σ*2s)2(pi 2py)1(pi 2pz)1
(a) Write down the formula for the molecule.
(b) Draw the molecular orbital energy level diagram
(c) determine the magnetic character
(d) the bond order of the molecule
(e) Determine the bond multiplicity
(a) Draw the ground state orbital diagram for C, clearly indicating the electron occupancy of the p subshell
(b) Explain, with the aid of an appropriate orbital diagram, how CH4 forms
(c) Would the C─H bond be very polar, slightly polar or non-polar?
(d) What is the bond angle in the CH4 molecule?
How do you estimate the Cu gravimetrically?
What are qualitative measures used to find Cu in a given sample?
#340153 on Dec 2023