How many moles of H+ are there in 1.980 g of H2SO4?Give your answer in moles and to three decimal places.(Molar mass of H2SO4 = 98.08 g mol−1)
Question
How many moles of H+ are there in 1.980 g of H2SO4?Give your answer in moles and to three decimal places.(Molar mass of H2SO4 = 98.08 g mol−1)
Solution
Step 1: Calculate the number of moles of H2SO4 The number of moles of a substance can be calculated using the formula:
moles = mass / molar mass
Given that the mass of H2SO4 is 1.980 g and the molar mass is 98.08 g/mol, we can substitute these values into the formula:
moles of H2SO4 = 1.980 g / 98.08 g/mol = 0.0202 mol
Step 2: Determine the number of moles of H+ in H2SO4 Each molecule of H2SO4 contains two atoms of hydrogen, which means it will produce two moles of H+ ions. Therefore, to find the number of moles of H+ ions, we multiply the number of moles of H2SO4 by 2:
moles of H+ = 2 * moles of H2SO4 = 2 * 0.0202 mol = 0.0404 mol
So, there are 0.040 moles of H+ in 1.980 g of H2SO4.
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