Question

Tin (ii) fluoride (snf2), or stannous fluoride, is used in some home dental treatment products. it is made by the reaction of tin with hydrogen fluoride according to the equation sn (s) + 2hf (g) ? snf2 (s) + h2 (g). how many grams of snf2 are produced from the reaction of 30.00 g of hf with sn?

Answer 1

Sn(s) + 2 HF(aq) ----> SnF2(s) + H2(g)

M HF = 20 g/mol
M SnF2 = 157 g/mol

40 g (HF) -----> 157 g (SnF2)
30 g (HF) -----> x g (SnF2)

x = 30 g × 157 g / 40 g = 117,75g

Answer: 117,75 g

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