Question

Tin metal reacts with hydrogen fluoride to produce tin (ll )fluoride and hydrogen gas according to the balanced equation. Sn(s)+2 HF(g) - SnF2(s)+H2(g)

Answer 1

1.263 moles of HF

Step-by-step explanation:

The balance chemical equation for given single replacement reaction is;

Sn + 2 HF → SnF₂ + H₂

Step 1: Calculate Moles of Tin as;

As we know,

Moles = Mass / A.Mass ----- (1)

Where;

Mass of Tin = 75.0 g

A.Mass of Tin = 118.71 g/mol

Putting values in eq. 1;

Moles = 75.0 g / 118.71 g/mol

Moles = 0.6318 moles of Sn

Step 2: Find out moles of Hydrogen Fluoride as;

According to balance chemical equation,

1 mole of Sn reacted with = 2 moles of HF

So,

0.6318 moles of Sn will react with = X moles of HF

Solving for X,

X = 0.6318 mol × 2 mol / 1 mol

X = 1.263 moles of HF