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Oxalic acid is 26.68% carbon, 2.24% hydrogen, and the remainder oxygen, what is its empirical formula?

Answer 1

#CHO_2# is the empirical formula for oxalic acid.

Assume 100 g of acid. Breaking it down into its components, there are #(26.68*g)/(12.01 *g*mol^-1*C); (2.24*g)/(1.00794 *g *mol^-1*H); (71.08*g)/(16.00*g*mol^(-1)*O)# #=# #C:H:O# #=# #2.22:2.22:4.44# #=# #1:1:2#.

Therefore, empirical formula of oxalic acid is #CHO_2#. If its molecular mass is #90.03*g*mol^-1#, what is its molecular formula?

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Answer 2

Axel Alvarado

Given its composition, oxalic acid's empirical formula is C2H2O4.

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Answer 3

Jose Ayala

The empirical formula of oxalic acid is ( \text{C}_2\text{H}_2\text{O}_4 ).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.