Friday, July 17, 2015
HCl as a Primary Standard?
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Question: Why is HCl not suitable as a primary standard? Answer: There are three main reasons why HCl is not suitable as a primary stand...
Tuesday, July 7, 2015
Which Element has the Smallest Atomic Radius?
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Question: Write the symbol for the element which has the smallest atomic radius Na, Si, Mg, P. Answer: In general, atomic radius decreas...
Sunday, July 5, 2015
Number of elements in period 2
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Question: Give the number of elements in period 2 of the periodic table Answer: 8 The rows going from left to right across the Periodic...
Monday, June 29, 2015
I.C.E., R.I.C.E and Equilibrium
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Need to calculate an equilibrium constant, but, you haven't been given all the equilibrium concentrations? Then you need an I.C.E. Tabl...
Sunday, June 28, 2015
How many molecules are present?
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Question: How many molecules are present in 4.21 mol of hydrogen gas? Answer: 1 mole of anything contains 6.02 x 10 23 particles. (Note...
Tuesday, June 23, 2015
Which of the following is an acid-base indicator?
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Question: Which of the following is an acid-base indicator ? hydrochloric acid sodium hydroxide water phenolphthalein Answer: Phe...
Sunday, June 21, 2015
What is the best indicator for titration?
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Question: What is the best indicator for titration? Answer: That all depends on what you are titrating! If you doing an acid-base titrati...
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