maddyf7253
28.08.2019 •
Chemistry
What mass in grams of sodium nitrate, nano3, is produced if 20.0g of sodium azide, nan3, in a dilute aqueous solution are reacted with excess silver nitrate, agno3, according to the following chemical equation?
nan3(aq) + agno3(aq) --> agn3(s) + nano3(aq)
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Ответ:
NaN3(aq) + AgNO3(aq) --> AgN3(s) + NaNO3(aq)
2) State the relevant theoretical ratio for the products and reactants in which you have the focus.
1mol NaN3 / 1mol NaNO3 or mol NaNO3 / 1mol NaN3
3) Transform the mass data into moles using the molar masses.
- molar mass of NaN3 = 23 g/mol + 3*14g/mol = 65 g/mol
- # of moles, n = mass / molar-mass = 20.0g / 65.0 g/mol = 0.3077 mol
4) From the theoretical ratio, get the number of moles produced. In this case the ratio is 1:1, so the number of moles of NaNO3 is also 0.3077 mol
5) Convert to mass, by multiplying by the molar mass of NaNO3
- molar mass of NaNO3: 23g/mol + 14g/mol + 3*16g/mol = 85 g/mol
- mass of NaNO3 = 0.3077 mol * 85g/mol = 26.15 g
26.15 g
Ответ:
The answer to your question is LiOH and Li₂SO₄
Explanation:
In a neutralization reaction, the reactants are an acid and a base, and the products are salt and water.
H₂SO₄ is an acid, so in the options, we must look for a base and a salt.
The first option is incorrect because the compounds are written incorrectly.
The second option is correct because LiOH is a base and LI₂SO₄ is a salt and these compounds are written correctly.
The third and fourth options are wrong.