All categories

3 years ago

Which will increase the rate of a chemical reaction?

Chemistry

2 answers:

faust18 [17]3 years ago

8 0

Answer: Catalyst and Temperature

Explanation: Catalyst is the subsatnce which is used to increase the rate of reaction by altering the route to reach towards the product thereby decreasing the activation energy.

Thus catalyst does not alter anything else but it will just increase the rate of the reaction.

Temperature is also used to increase the rate of reaction. If temprature of the system is increased , it will enhance the number of collisions between the particles and thus increasing the rate of the reaction.

NikAS [45]3 years ago

7 0

A catalyst increases the rate of a chemical reaction, as a sub category, an enzyme also preforms the same job.

You might be interested in

Which substance in this redox reaction is the oxidizing agent?

zepelin [54]

Answer: The correct answer is Option B.

Explanation:

Oxidizing agent is the agent which oxidizes the other substance and itself gets reduced. It undergoes reduction reaction in which, it gains electrons and also the oxidation state of the substance gets reduced.

Reducing agent is the agent which reduces the other substance and itself gets oxidized. It undergoes oxidation reaction in which, it looses electrons and the oxidation state of the substance is increased.

For the given chemical equation:

$Cu+2AgNO_3\rightarrow 2Ag+Cu(NO_3)_2$

Half reactions for the given chemical reaction:

$Cu\rightarrow Cu^{2+}+2e^-$

Copper is loosing 2 electrons, thus it is undergoing oxidation reaction and is considered as a reducing agent.

$Ag^++e^-\rightarrow Ag$

Silver ion is gaining 1 electron per atom, thus it is undergoing reduction reaction and is considered as an oxidizing agent.

Hence, $AgNO_3$ is considered as an oxidizing agent and therefore the correct answer is Option B.

6 0

3 years ago

In the compound NH3, the subscript 3 indicates that?

Alekssandra [29.7K]

This tells us that in a single molecule of ammonia, there is one nitrogen atom, and three hydrogen atoms.

8 0

4 years ago

Read 2 more answers

When 2.50 mol of mg3n2 are allowed to react how many moles of h2o also react?

spin [16.1K]

Notice that in the equation given, there is 1 mol of Mg3N2 and 6 mol of H2O. Consequently, the question is requesting, if we took 2.5 mol of Mg3N2, how many mol of H2O would be essential to complete a similar reaction -- in quintessence, multiplying everything by 2.5:

the solution would be: 6 * 2.5 = 15 mol

7 0

4 years ago

What is the temperature of a 6.1 mole sample of He gas at 18.5 bar and volume of 115L? (Round answer to the hundredths place)

Bond [772]

Answer:

4202.1 K

Explanation:

From;

PV=nRT

P= pressure of the gas = 18.5 bar

V = volume of the gas = 115L

n= number of moles of the gas = 6.1 mole

T= temperature of the gas = ?

R = gas constant = 0.083 L⋅bar⋅K−1⋅mol−1

T = PV/nR

T = 18.5 * 115/6.1 * 0.083

T = 2127.5/0.5063

T= 4202.1 K

7 0

3 years ago

If you wanted to make 0.800 Liters of a 0.531 M solution of Nickel(II) chloride, NiCl2, how many grams of NiCIZ

kotegsom [21]

Answer:

54.8g

Explanation:

1. Calculate the number of moles of NiCl₂

a) Identify the known variables

V =0.800 liters
M = 0.531M
n = ?

b) Formula

$M=\dfrac{n}{V}$

c) Clear n

$n=M\times V$

g) Substitute and compute

$n=0.531M/times 0.800liters=0.4248mol$

2. Convert moles to grams

a) molar mass of NiCl₂

129g/mol (shown in the problem)

b) Unit canceling method

Use the factors in order to cancel the units to obtain grams

$0.4248mol\times 129\dfrac{g}{mol}=54.7992g$

Note that the mol unit appears on the numerator and denominator, so it cancels leaving just g (grams).

c) Round to 3 signficant figures

$54.8g$

6 0

4 years ago