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2hf + caoh2 = CaF2 + 2H2O

Acid is 'hf' ; hydrofluoric acid

Base is 'caoh2' ; calcium hydroxide.

NB

When writing chemcial formula , single letter symbols are ALWAYS a CAPITAL letter. Two letter symbols are always ; first letter is a capital letter and the secons letter is small case. This is the internationally agreed standard. Otherwise confusion reigns.

So 'hf' should be 'HF' (Hydrogen(H) and Fluorine(F)

'caoh"' should be 'Ca(OH)2' ( Calcium (Ca) , Oxygen (O) and Hydrogen (H)).

The suffix '2' indicates that there are two hydroxide anions, which are shown in brackets. As written by yourself 'caoh2' indicates 1 x calcium , 1 x oxygen and 2 x hydrogen.

Hope that helps for future reference!!!!

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lenpollock

Lvl 17
2y ago

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