and last questions Which elements is the reducing agent in this reaction? Cr 2 O

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Which elements is the reducing agent in this reaction? Cr 2 O 7 2- + 3HNO 2 + 5H + 2Cr 3+ 3NO 3 - + 4H 2 O Enter the chemical symbol of the element. is the reducing agent. When solution of silver nitrate and potassium chloride are mixed, silver chloride precipitates out of solution according to the equation AgNO 3 (aq) + KCL(aq) rightarrow AgCl(s) + KNO 3 (aq) What mass of silver chloride can be produced from 1.18L of a 0.106 M solution of silver nitrate? Express your answer with the appropriate units. mass of AgCl = The reaction described in part A required 3.47L of pottassium chloride. What is concentration of this potassium chloride solution? Express your answer with the appropriate units.

Explanation / Answer

1)Cr gets reduced from +6 to +3 means N acts as oxidisin agent

2)AgCl molar mass = 143.32 gm/mol

so amount precipitated =

M= (wt/143.32 ) *(1000/1180)

so wt =17.926 grams

here 169.87 g/mol grams of AgNo3 gives 143.32 grams of Agcl

so 17.926 gives ----------------?

answer = 15.124 grams

3)
equate number of milli moles

MV= constant

M1V1=M2V2
1.18 * 0.106 = M * 3.47

M= 0.036 Molar

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last Questions

M1V1/n1=M2V2/n2 (koh=h2so4)

(60*M )/ 2 = 14.2*1.5

M=0.71 molar

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