All categories

2 years ago

Explain why there was a reaction between zinc metal and a salt solution of copper sulphate please help me

Chemistry

1 answer:

natali 33 [55]2 years ago

6 0

Answer:

When zinc is added to copper sulphate (CUSO4) solution due to more reactivity of zinc, cooper is replaced by the zinc and forms zinc sulphate. During the process, the colour of the solution changes from blue to colourless.

You might be interested in

A wave has a wavelength of 1.2 m and a wave speed of 24 m/s. What is the

AlladinOne [14]

Answer:

A. 20 Hz

Explanation:

24 divided by 1.2 = 20 Hz

5 0

2 years ago

Read 2 more answers

The second-order rate constant for the following gas-phase reaction is 0.041 1/MLaTeX: \cdotâs. We start with 0.438 mol C2F4 in

pantera1 [17]

Answer:

134.8 seconds is the half-life (in seconds) of the reaction for the initial $C_2F_4$ concentration

Explanation:

Half life for second order kinetics is given by:

$t_{\frac{1}{2}=\frac{1}{k\times a_0}$

Integrated rate law for second order kinetics is given by:

$\frac{1}{a}=kt+\frac{1}{a_0}$

$t_{\frac{1}{2}$ = half life

k = rate constant

$a_0$ = initial concentration

a = Final concentration of reactant after time t

We have :

$C_2F_4 \longrightarrow \frac{1}{2} C_4F_8$

Initial concentration of $C_2F_4=[a_o]=\frac{0.438 mol}{2.42 L}=0.1810 mol/L$

Rate constant = k = $0.041 M^{-1} s^{-1}$

$t_{\frac{1}{2}=\frac{1}{k\times a_0}$

$=\frac{1}{0.041 M^{-1} s^{-1}\times 0.1810 mol/L}$

$t_{1/2}=134.8 s$

134.8 seconds is the half-life (in seconds) of the reaction for the initial $C_2F_4$ concentration

3 0

3 years ago

How many moles are there in 135g of aluminum ?

dem82 [27]

Answer:

The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Aluminium, or 26.981538 grams.

6 0

3 years ago

Select the correct image.<br> Which body part is vestigial in humans?

Dominik [7]

Answer:

should be appendix, I can't see any image tho.

8 0

2 years ago

Read 2 more answers

According to the authors, the most effective means of developing _______________ are instrumental chemistry, microscopy, photoma

blsea [12.9K]

Answer:

Associative Evidence

Explanation:

According to the authors, the most effective means of developing associative evidence are instrumental chemistry, microscopy, photomacrography, other optical methods, and morphology. It is used to provide the link between and evidence and individual involved in a crime.

6 0

3 years ago

Explain why there was a reaction between zinc metal and a salt solution of copper sulphate please help me​

Explain why there was a reaction between zinc metal and a salt solution of copper sulphate please help me