Kaila runs competitively. She would like to calculate her average running speed each time she runs. Which data should Kaila reco
1 answer:
You might be interested in
Answer:
(1) Cl₂ is the limiting reactant.
(2) 8.18 g
Explanation:
- 2Na(s) + Cl₂(g) → 2NaCl(s)
First we <u>convert the given masses of reactants into moles</u>, using their <em>respective molar masses</em>:
- Na ⇒ 12.0 g ÷ 23 g/mol = 0.522 mol Na
- Cl₂ ⇒ 5.00 g ÷ 70.9 g/mol = 0.070 mol Cl₂
0.070 moles of Cl₂ would react completely with (2 * 0.070) 0.14 moles of Na. There are more Na moles than that, so Na is the reactant in excess while Cl₂ is the limiting reactant.
Then we <u>calculate how many moles of NaCl are formed</u>, <em>using the limiting reactant</em>:
- 0.070 mol Cl₂ *
= 0.14 mol NaCl
Finally we <u>convert NaCl moles into grams</u>:
- 0.14 mol NaCl * 58.44 g/mol = 8.18 g
Answer:
Q is 0.5 and K is 0.01, therefore K is less than Q.
the system will proceed in the reverse direction, thereby converting products into reactants. converting Nitric oxide to form oxygen and nitrogen.
Explanation:
Given,
N2 (g) + O2 (g) « 2 NO (g)
K = 0.01
heated temperature = 2000 ⁰C
N2 moles =0.4
O2 moles =0.1
2NO moles = 0.08
Volume of container = 1L
Q is the reaction quotient of the equilibrium equation. it is use to determined which direction the system will move to by comparing it with the K value.
Q can be calculated by multiplication of mass of reactant divide by mass of product
Q =
the mass of the chemicals are in mole, there is need to convert them to moles/litre
therefore,
for N₂ : 0.4 mole per 1L container = 0.4 mol/L = 0.4M
for O₂ : 0.1 mole per 1L container = 0.1 mol/L = 0.1M
for 2NO : 0.08mole per 1L container = 0.08 mol/L = 0.08M
Q = = (0.4*0.1)/0.08 = 0.5
finally, we are going to compare the value of Q with K
Note that:
if K>Q , the reaction will proceed forward, converting reactants into product.
if K<Q , the reaction will proceed backward, converting products into reactants.
if K=Q , the system of reaction is already in equilibrium.
since, Q is 0.5 and K is 0.01, therefore K is less than Q.
the system will proceed in the reverse direction, thereby converting products into reactants. converting Nitric oxide to form oxygen and nitrogen.